December 18, 2019

Incident at PRINCE GEORGE BC (CYXS)

A Central Mountain Air de Havilland DHC-8-102 (C-FCJE/GLR8016) from Prince George, BC (CYXS) to Dease Lake, BC (CYDL) departed CYXS and returned due to a gear malfunction. The aircraft landed safely on Runway 15. No operational impact.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Maintenance found a wire broken at pin B on C/P 3261-S10. Repaired in accordance with (IAW) aircraft maintenance manual (AMM) 20-45-09-00 and rigged per AMM 32-20-16-02. Proximity Sensing Electronics Unit (PSEU) Built-in Test Equipment (BITE) test carried out (C/O) as per AMM 32-61-50-02, no fault codes. Gear indication normal now. Gear swings C/O IAW AMM 32-30-00-02.
Update TSB Report #A19P0184: C-FCJE, a Bombardier DHC-8-102 operated by Central Mountain Air, was conducting flight GLR8016 from Prince George (CYXS), BC to Dease Lake (CYDL), BC with 3 crew members and 26 passengers on board. After departure the flight crew retracted the landing gear but noted an abnormal sound and the landing gear door remained open. The flight crew actioned the QRH for the landing gear door malfunction and proceeded to the alternate landing gear extension. The flight crew returned to CYXS and conducted an initial fly past of the tower/ARFF, followed by a second fly past for a pilot on the ground, to visually inspect the position of the landing gear. The flight crew then conducted an uneventful landing. Subsequent maintenance actions by the operator indicated a broken wire associated with the nose landing gear doors.

April 7, 2019

Incident at VANCOUVER INTL BC (CYVR)

A Jazz de Havilland DHC-8-402 (C-FSRW/JZA8073) from Vancouver, BC (CYVR) to Victoria, BC (CYYJ) returned to CYVR due to a gear issue. The aircraft landed safely on Runway 08L at 2346Z.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. After Landing Gear retraction the R/H Gear Door advisory light remained illuminated. The Cabin Crew confirmed that the door remained open. The flight returned to CYVR. Maintenance performed Gear Swings and found that the L/H and R/H Main Gear aft doors failed to close. The Built-In-Test for the (PSEU) Proximity Sensor Electronic Unit did not identify any faults. The PSEU was replaced and a satisfactory Landing Gear Operational Test completed. The aircraft was returned to service. SDR NO. 20190410012 has been submitted.

October 12, 2019

Incident at THUNDER BAY ON (CYQT)

A Summit Air Ltd. de Havilland DHC-8-102 (C-GASB/SU1811) on a flight from Thunder Bay, ON (CYQT) to Sioux Lookout, ON (CYXL) departed CYQT and reported a gear indication issue and advised returning to CYQT. Issue resolved and the aircraft landed safely. An Ornge Global Air PC-12 (PUL103) on a flight from Thunder Bay, ON (CYQT) to Sioux Lookout, ON (CYXL) had its arrival delayed 5 minutes to accommodate SU1811. Duplicate AOR #257242-V1 deleted.
UPDATE from Aircraft Maintenance & Manufacturing: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. After take-off from Thunder Bay, ON when the landing gear was selected UP the landing gear handle light and the left-hand (L/H) and right-hand (R/H) MAINS lights remained amber, with the NOSE GEAR light being red. The crew followed procedures and selected the landing gear DOWN, three green lights were confirmed and the aircraft returned for landing without incident. Company maintenance bled the #2 hydraulic system, cleared the Proximity Sensing Electronics Unit (PSEU) codes and conducted Bite check operation of the Nose Landing Gear (NLG) Solenoid Sequence Valve (SSV), all operating normally. Manual landing gear release was also confirmed as operating normally. The aircraft was released pending a satisfactory test flight which resulted in all systems operating normally. There were no further report incidents.

September 29, 2019

Incident at 3NM NW OTTAWA / MACDONALD-CARTIER INTL ON (CYOW)

A Jazz Bombardier CL-600-2B19 (C-GUJA/JZA8970) on a flight from Ottawa/MacDonald-Cartier Intl, ON (CYOW) to Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) notified the Ottawa tower that it was going back and landing due to a problem with the landing gear. No emergency was declared and no assistance was requested. The aircraft landed without incident at 1041Z. No impact on operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. During initial climb, Flight Crew received a gear disagree warning message after selecting gear up. Flight returned and landed without further incident after completing a landing gear manual release. Upon gate return, the landing gear retraction system was deferred in accordance with MEL 32-30-01X and the aircraft released back to service. Maintenance later replaced the Proximity Sensor Electronic Unit (PSEU) for troubleshooting, as the reported system failure could not be reproduced. The system was tested, and the aircraft released to service.

March 28, 2019

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

A WestJet Encore de Havilland DHC-8-402 (C-FENU/WEN3476) from Toronto/Pearson, ON (CYYZ) to Ottawa/MacDonald-Cartier, ON (CYOW) rejected its takeoff from Runway 24R due to a fuselage door warning indication. WEN3476 taxied back to the gate. No impact to operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Maintenance tested and replaced the PSEU. AC returned to service.

September 23, 2019

Incident at In the vicinity of: EDMONTON INTL AB (CYEG)

A WestJet Encore Ltd. de Havilland DHC-8-402 (C-GWEF/WEN3227) from Regina, SK (CYQR) to Edmonton, AB (CYEG) reported having a gear door indication while en route. Emergency Response Services (ERS) vehicles were requested by WEN3227 for its arrival. An Air Canada Rouge Airbus A319 (ROU1507) from Toronto/Pearson, ON (CYYZ) to Edmonton, AB (CYEG) was re-routed to land on Runway 02. WEN3227 landed safely at 1414Z and taxied off runway 30 onto A4 under own power.
Update TSB Report #A19W0131: C-GWEF, a WestJet Encore De Havilland DHC-8-400, was conducting flight WEN3227 from Regina Intl (CYQR), SK to Edmonton Intl (CYEG), AB. After departing CYQR, the crew reported the right main gear door would not close. The flight was conducted at a reduced airspeed and a manual gear extension was required for landing. Emergency vehicles meet the aircraft on arrival in CYEG for a visual inspection before taxing to the gate. The aircraft taxied under its own power to the gate after arrival. Maintenance replaced the solenoid sequence valve in accordance with Aircraft Maintenance Manual (AMM) . Further interrogation of the Proximity Sensing Electronics Unit (PSEU) revealed that both Main Landing Gear (MLG) Door proximity sensors were out of rig. The door sensors were rigged in accordance with the AMM. Operational tests were carried out with no further defects found.

April 21, 2019

Incident at REGINA INTL SK (CYQR) (Aerodrome, runway or taxiway shutdown)

A WestJet Encore (C-GLWJ/WEN3273) from Winnipeg, MB (CYWG) to Regina, SK (CYQR) reported troubleshooting a landing gear issue and advised continuing to CYQR. Emergency declared and Aircraft Rescue and Fire Fighting (ARFF) services requested. Aircraft landed at 1827Z and occupied Runway 31 for a few minutes, resulting in 3 landing aircraft switching to Runway 26.
Update TSB #A19C0036: C-GLWJ, a Bombardier DHC-8-400 aircraft operated by WestJet Encore, was conducting flight WEN3273 from Winnipeg/James Armstrong Richardson Intl (CYWG), MB to Regina Intl (CYQR), SK with 4 crew members and 27 passengers on board. During the takeoff from CYWG, the flight crew received a NOSE LANDING GEAR DOOR caution light indication. The flight crew completed the QRH procedures, continued to CYQR, and declared an emergency. The aircraft landed on Runway 31 without further incident. An inspection of the landing gear indication system by the operators maintenance revealed that the Proximity Sensor Electronic Unit (PSEU) was out of tolerance. The sensor was rigged, and gear swings were successfully completed. The aircraft was then returned to service.

February 24, 2019

Incident at CALGARY INTL AB (CYYC)

A WestJet Boeing 737-700 (WJA1571) from Denver Intl, CO (KDEN) to Calgary Intl, AB (CYYC) initiated a missed approach for Runway 17L after receiving an unsafe gear indication. The arrival controller vectored the aircraft until the issue was resolved. No emergency was declared. No impact to operations. WJA1571 landed without incident at 2339Z.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into the occurrence. Aircraft C-GWBX (Tail #236, Serial # 34156) was reported to have landed with a split trailing flap condition. The split trailing flap condition occurred prior to reaching flaps 2 setting and after landing with the split trailing flap condition the Proximity Sensor Electronic Unit (PSEU) light illuminated. Maintenance replaced both left and right flap position transmitters in accordance with (IAW) Aircraft Maintenance Manual (AMM) 27-58-01. Maintenance tested the PSEU IAW AMM 32-09-01. The aircraft was released for service on 02/25/2019. Between 02/25/2019 and 02/28/2019 the aircraft flew 7 flights. Same aircraft and additional details referenced in CADORS 2019H0042.

January 3, 2019

Incident at 26NM HALIFAX / STANFIELD INTL NS (CYHZ)

A WestJet Encore Ltd. Bombardier DHC-8-402 (C-GWJK/WEN3428) from Halifax/Stanfield International, NS (CYHZ) to St. Johns International, NL (CYYT) returned to CYHZ due to a gear issue. The aircraft held to burn fuel. At 1255Z, the aircraft declared "PAN PAN" and requested Aircraft Rescue and Fire Fighting (ARFF) services on landing. After a tower fly-by for a gear check, the aircraft landed safely at 1343Z. The Joint Rescue Coordination Centre (JRCC) Halifax was advised.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On the evening before the event, a Service Bulletin was accomplished on the nose landing gear of tail 443 (C-GWJK). The modification involved replacement of the drag strut lower lock link. This task required the removal and reinstallation of the Nose Landing Gear (NLG) lock proximity sensor brackets. Following the CADOR event, Maintenance found that the NLG lock sensors had been rigged to the nominal gap (~0.050”). However, the inductance readings in the Proximity Sensing Electronic Unit (PSEU) were too far (8.029mH and 8.010mH, rigging range is 8.196mH-8.438mH). No movement was found on the sensor brackets. The sensor rigging was adjusted to within the appropriate range, gear swings were carried out, and the aircraft was returned to service.
TSB Report #A19A0002: C-GWJK, a Bombardier DHC-8-400 aircraft operated by WestJet Encore, was conducting flight WEN3428 from Halifax/Stanfield Intl (CYHZ), NS to St Johns Intl (CYYT), NL. Upon selection of landing gear up shortly after the takeoff, the nose landing gear failed to retract. The flight crew declared an emergency, and performed a low approach for a visual inspection by the control tower. Following a holding of approximately 1 hour to burn fuel, the aircraft landed without incident at CYHZ. The flight crew was able to taxi the aircraft to the gate under its own power. The operator’s maintenance determined that the rigging for the NGLK1 and NGLK2 sensors needed to be reset. A gear swing was completed, and the aircraft released to service.

December 26, 2018

Incident at VANCOUVER INTL BC (CYVR)

A Jazz de Havilland DHC-8-402 (C-FSRY/JZA8065) from Vancouver International, BC (CYVR) to Victoria International, BC (CYYJ) experienced a nose gear issue. All arrivals and departures were shifted to CYVR Runway 08R to facilitate JZA8065 landing on Runway 08L.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Crew received landing gear inop message after takeoff. Gear handle was illuminated, but gear panel was blank and flight attendant reported main landing gear was up. Crew cycled bypass doors with no fix. Upon selection of gear down, crew received 3 green and nose gear door indicated open. Landing gear inop message remained. Flight diverted back to Vancouver, declared PAN PAN and flight landed without incident. Maintenance changed the Unit, Proximity Sensor Electronic (PSEU) and no further issues noted.
Update TSB Report #A18P0189: C-FSRY, a Bombardier DHC-8-402 aircraft operated by Jazz Aviation LP, was conducting flight JZA8065 from Vancouver Intl (CYVR), BC to Victoria Intl (CYYJ), BC. When the landing gear was selected up after the departure from CYVR, the landing gear handle illuminated and the flight crew received a LANDING GEAR INOP caution light. The flight crew then selected the landing gear down, and received three green lights and an amber light on the nose landing gear door. The LANDING GEAR INOP light remained on. The flight crew declared a PAN PAN and returned to CYVR where the aircraft landed without further incident. The operator’s maintenance replaced the Proximity Sensor Electronic Unit (PSEU), performed gear swings, and returned the aircraft to service.

December 13, 2018

Incident at 5NM THUNDER BAY ON (CYQT)

On approach to Runway 25, a Jazz de Havilland DHC-8-402 (JZA8533) from Toronto/Lester B. Pearson International, ON (CYYZ) to Thunder Bay, ON (CYQT) reported an unsafe landing gear indication. The aircraft abandoned the approach, troubleshooted the issue and requested emergency services to be on standby for the aircrafts landing. The aircraft landed without incident at 1735Z with emergency services standing by.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On approach to CYQT, the Flight Crew reported the left hand (L/H) main gear was down but no indication that it was locked on either the main indicator or the alternate indicator. The Flight Crew also carried out an alternate extension which made no difference. The Crew then prepared the Cabin for an emergency landing, declared an emergency, and shut down Engine No. 1 per the Quick Reference Handbook (QRH). The flight landed without further incident. Maintenance troubleshooting determined the PSEU (Proximity Sensor Electronic Unit) had an internal fault. The unit was replaced. Maintenance also found and repaired faulty wiring in the landing gear circuit. The aircraft was returned to service following repairs and gear swings. A Service Difficulty Report (SDR) was submitted.
Update TSB Report #A18C0126: C-GJZD, a Bombardier DHC-8-400 aircraft operated by Jazz Aviation LP, was conducting flight JZA8533 from Toronto/Lester B. Pearson Intl (CYYZ), ON to Thunder Bay (CYQT), ON. Upon extension of the landing gear during the approach at CYQT, the flight crew did not receive a down & locked indication for the left main landing gear, on both the advisory panel and the alternate indicator on the floor. A missed approach was conducted, and the flight crew performed an alternate landing gear extension; however, it was unsuccessful. In accordance with the QRH, the landing gear was pumped down 30 to 50 times with no effect. The flight crew declared an emergency, shut the number 1 engine down as per the procedure, and requested ARFF in attendance. The cabin was prepared for an emergency landing, and passengers were briefed. The subsequent landing was conducted without further incident with the left engine inoperative. The aircraft was towed to the gate. The operators maintenance replaced the Proximity Sensor Electronic Unit (PSEU), and repaired wiring at the landing gear down-lock. Landing gear swings were performed with no further faults.

October 24, 2018

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

An Air Georgian Ltd. Bombardier CL-600-2B19 (Series 100) (C-GKGC/GGN7367) from Toronto/Pearson International, ON (CYYZ) to Detroit/Wayne County, MI (KDTW) reported having a stuck landing gear issue and a nose wheel fault indication. The aircraft elected to return to CYYZ. A 1C emergency was declared and the Aircraft Rescue and Fire Fighting (ARFF) unit was advised to respond. GGN7367 landed on Runway 23 at 0205Z without incident. No impact to operations.
Update TSB Report #A18O0145: C-GKGC, a Bombardier CL 600-2B19 (CRJ200) aircraft operated by Air Georgian, was conducting flight GGN7367 from Toronto/Lester B. Pearson Intl (CYYZ), ON to Detroit/Metro Wayne County (KDTW), MI. After the landing gear was selected up shortly after the departure from CYYZ, the flight crew received a NOSE GEAR DOOR OPEN warning message. The flight crew elected to return to CYYZ and declared an emergency. The aircraft landed uneventfully on Runway 23 with ARFF standing by. The operator’s maintenance checked Proximity Switch Electronic Unit (PSEU) codes, which indicated that the nose landing gear was not fully extended. The oleo was serviced, and after the landing gear was swung, no further faults were detected. The aircraft was returned to service.

October 15, 2018

Incident at THUNDER BAY ON (CYQT) (Aerodrome, runway or taxiway shutdown)

A Jazz de Havilland DHC-8-402 (C-GJZC/JZA535) from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Thunder Bay, ON (CYQT) commenced missed approach on final for Runway 25 due to a nose wheel indication. Gear was extended manually and the flight landed safely. Aircraft shutdown on Runway 25 for 15 minutes. All other aircraft re-routed to Runway 30, Runway 25 available at 1935Z.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On final approach when the gear was selected down, the nose gear did not extend, the nose gear doors did not open and the red nose gear unsafe light was on. The crew performed a go-around, carried out a successful alternate gear extension and landed without incident. No emergency was declared. The crew shut down and remained on the runway until gear pins were installed and were towed to the gate. Maintenance troubleshooting discovered the nose landing gear forward door main bellcrank and over center linkage very worn and requiring replacement. On the forward radome bulkhead, the attachment hole for the nose landing gear door bellcrank was elongated and will require repair. Also, the nose landing gear door main bellcrank support fitting was elongated at the bellcrank pivot point and will require replacement. The repair scheme and required parts are being evaluated. A Service Difficulty Report (SDR) was submitted.
Update TSB #A18C0104: C-GJZC, a Bombardier DHC-8-400 aircraft operated by Jazz Aviation LP, was conducting flight JZA535 from Toronto/Lester B. Pearson Intl (CYYZ), ON to Thunder Bay (CYQT), ON. When the flight crew selected landing gear down during the final approach to Runway 25 at CYQT, the nosegear doors did not open and, consequently, the nose landing gear did not extend. The amber nose-gear door light did not illuminate, and the red nose-gear unsafe light remained illuminated. Additionally, the landing gear handle also remained illuminated. The flight crew conducted a goaround, and requested ARFF to stand by for the landing. QRH items were executed, and an alternate landing gear release and extension was performed. The subsequent landing on Runway 25 was successful, and the flight crew brought the aircraft to a full stop on the runway with ARFF responding. Gear pins were installed, and the aircraft was towed to the gate. The operators maintenance replaced the Proximity Sensor Electronic Unit (PSEU), and the aircraft was returned to service.

June 1, 2018

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

C-GONJ, a Bombardier DHC-8-102 aircraft operated by Jazz Aviation LP, was conducting flight JZA8327 from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Sault Ste. Marie, ON (CYAM) with 3 crew members and 33 passengers on board. Shortly after the departure from CYYZ, the flight crew felt a bump which was followed by a nose landing gear unsafe indication. After contacting the operator?s maintenance, the flight crew elected to return to CYYZ and declared an emergency. During the approach, the alternate landing gear extension was executed and the aircraft landed uneventfully with ARFF standing by. The operator?s maintenance performed several landing gear operations without being able to duplicate the fault. As a precaution, the Proximity Switch Electronics Unit (PSEU) and nose landing gear down lock sensor were replaced and the aircraft was returned to service. No further nose landing gear faults were reported on subsequent flights.

May 17, 2018

Incident at Phoenix International Airport (KPHX)

TSB Report#A18F0106: C-GNJZ, a Bombardier CL-600-2D24 (CRJ900) aircraft operated by Jazz Aviation LP, was conducting flight JZA8229 from Phoenix/Sky Harbor Intl, AZ (KPHX) to Vancouver Intl, BC (CYVR) with 4 crew members and 65 passengers on board. Upon selection of the landing gear up shortly after the departure from KPHX, the flight crew received a NOSE GEAR UNSAFE indication as the nose gear lights were alternating between amber and red. The flight crew executed the related checklist, declared a PAN PAN and requested a return to KPHX where the aircraft landed without further incident.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Company Maintenance adjusted the No. 1 and No. 3 Nose Landing Gear Weight on Wheels Proximity Sensors and replaced the Proximity Sensing Electronic Unit (PSEU). Several gear swings were then carried out with no messages or unusual noises. Aircraft was returned to service.

January 5, 2018

Incident at IQALUIT NU (CYFB)

UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Weight on Wheels fault and Proximity Switch Electronic Unit (PSEU) pointed to sensor 11 which was hard faulted. Sensor was changed. The aircraft was sent for a test flight, and had multiple sensor failures (cargo door, Main Cabin Door [MCD]). PSEU replaced, and a satisfactory test flight was carried out. No issues since.
A Canadian North de Havilland DHC-8-106 (C-GECN/MPE621) on a flight from Iqaluit, NU (CYFB) advised they were returning to CYFB due to an aircraft mechanical issue after take off. No emergency declared. No impact on operations.

November 2, 2017

Incident at OTTAWA / MACDONALD-CARTIER INTL ON (CYOW)

A Jazz Aviation Bombardier CL-600-2B19 (C-FDJA/JZA8044) on a flight from Ottawa/MacDonald-Cartier, ON (CYOW) to Boston, MA (KBOS) declared an emergency at 1055Z after take off due to a nose gear issue. The aircraft returned to CYOW and landed safely at 1058Z. No impact on operations.
UPDATE: TSB Report#A17O0234: C-FDJA, a Bombardier CL-600-2B19 (CRJ) aircraft operated by Jazz Aviation LP, was conducting flight JZA44 from Ottawa/Macdonald-Cartier Intl, ON (CYOW) to Boston/General Edward Lawrence Logan Intl, MA (KBOS) with 3 crew members and 23 passengers on board. After departure from CYOW, the flight crew received a gear disagree message after selecting GEAR UP. The flight crew referenced the QRH, and carried out an emergency gear extension. An emergency was declared, and the aircraft returned to land at CYOW without further incident. The operator?s maintenance carried out several checks, re-gapped the NOSE LANDING GEAR OLEO CENTERED/EXTENDED sensor, and replaced the Proximity Sensing Electronic Unit (PSEU). The aircraft was returned to service.

June 23, 2017

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

An Air Georgian Bombardier CL-600-2B19 (GGN7365) from Toronto, ON (CYYZ) to Detroit, MI (KDTW) departed Runway 23. On departure, GGN7365 had a gear issue. GGN7365 declared an emergency due to the uncertainty of landing gear status. The Aircraft Rescue and Fire Fighting (ARFF) was requested and the pilot was uncertain if upon landing, they would be able to clear the runway. GGN7365 landed CYYZ Runway 23 at 0231Z without incident and taxied unassisted to the gate.
UPDATE: TSB Report#A17O0136: C-GKEP, a Bombardier CL-600-2B19 aircraft operated by Air Georgian, was conducting flight GGN7365 from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Detroit Metropolitan/Wayne County, MI (KDTW). Upon selection of the landing gear up during the initial climb out of CYYZ, the flight crew received a GEAR DISAGREE warning message. The flight crew followed QRH procedures and, after declaring an emergency, requested a return to CYYZ where the aircraft landed uneventfully with ARFF standing by. The aircraft taxied back to the gate under its own power. After troubleshooting, the operator?s maintenance determined that the nose oleo was under serviced, preventing it from fully extending. The condition was detected by the Prox. Sensor Electronic Unit (PSEU), which affected the logic for the landing gear retraction sequence. The nose oleo was serviced in accordance with Aircraft Maintenance Manual (AMM) 12-12-32 and, after several landing gear cycles, no further faults were found. The aircraft was then returned to service.

January 4, 2017

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

A Morningstar Air Express Boeing 757 200 (MAL7070) from Winnipeg, MB (CYWG) to Toronto, ON (CYYZ) initiated an overshoot on approach to Runway 23 and declared PAN PAN due to a slat/flap issue. Fire and Emergency services were requested. MAL7070 landed without incident at 0834Z. No operational impact.
UPDATE: TSB Report#A17O0003: C-FMEP, a Boeing 757-200 aircraft operated by Morningstar Air Express, was conducting flight MAL7070, from Winnipeg/James A. Richardson Intl, MB (CYWG) to Toronto/Lester B. Pearson Intl, ON (CYYZ). During the approach to Runway 23 at CYYZ, the flight crew received a TE FLAP DISAGREE EICAS message upon selection of final landing flap. A missed approach was executed and the flight crew declared a PAN PAN. QRH procedures were performed, the flight crew completed a second approach and landed without further event. Emergency services inspected the aircraft prior to taxing to the gate and no damage was observed. The operator?s maintenance replaced the Proximity Sensor Electronics Unit (PSEU) and the aircraft was returned to service.

April 28, 2016

Incident at Portland International Airport, OR (KPDX)

TSB#A16F0073: C-GKTA, a Jazz Aviation Lp DHC8-301 aircraft, was operating as flight number JZA8127 from Vancouver Intl, BC (CYVR) to Portland Intl, OR (KPDX). When the landing gear was extended during the approach, all three landing gear door lights illuminated, associated with gear unsafe lights. An alternate extension was completed and the landing was uneventful. ATC, when notified, initiated ARFF. The operator?s maintenance replaced the Proximity Sensor Electrical Unit (PSEU) and the aircraft was returned to service.

October 14, 2016

Incident at RANKIN INLET NU (CYRT)

UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Replaced the Proximity Switch Electronic Unit (PSEU). Performed Operational check of PSEU and associated circuits. Cargo door inoperative alert rectified. No faults found. Tested satisfactory.
Approximately 5 minutes after departing, a Calm Air Aerospatiale ATR 42-300 (C-FJYW/CAV561) on a local flight from Rankin Inlet, NU (CYRT) advised that they were returning due to an indication. The aircraft landed without incident. No impact to operations.

May 30, 2016

Incident at RED DEER REGIONAL AB (CYQF)

A Central Mountain Air Ltd. Dornier D328 (GLR653) from Calgary, AB (CYYC) to Edmonton, AB (CYEG) reported a pressurization issue, declared an emergency and began their descent. The pilot reported shortly after that the issue was resolved. There was no impact to operations.
UPDATE: TSB#A16W0062: C-FHVX, a Central Mountain Air Dornier 328 operating as GLR653, departed Calgary Intl. (CYYC) airport for Edmonton Intl. (CYEG). At cruise level of 16 000 feet for approximately 5 minutes, the crew reported a pressurization issue, declared an emergency and requested a lower altitude. An emergency descent to 10 000 feet was initiated. At 10 000 feet the passengers and company were briefed and the flight continued to Edmonton. Maintenance checked the PSEU (Proximity Sensor Electronic Unit) for flight faults and none were found pertaining to the pressurization system. All systems were checked as required by the maintenance manuals with no faults found. The aircraft was returned to service after a satisfactory test flight.

February 10, 2016

Incident at CALGARY INTL AB (CYYC)

UPDATE: TSB#A16W0022: The Jazz Aviation Lp de Havilland DHC-8-400, C-GGMN, was operating as flight JZA8551 from Calgary Intl, AB (CYYC) to Victoria Intl, BC (CYYJ). On the initial climb from CYYC, the left main landing gear door amber caution light was flickering after gear retraction. A decision was made to return to CYYC, an alternate landing gear extension was carried out and ATC was notified. No emergency was declared, however emergency vehicles were requested to standby; the aircraft landed safely. The operator?s maintenance replaced the left main landing gear door sensor. The left and right main landing gear doors sensors were rigged. These actions did not rectify the original defect and upon investigation it was found that the left proximity sensor target had migrated from its prop location. The target was re-adjusted and secured. The Proximity Senor Electronics Unit (PSEU) and left main landing gear door sensor was reading near and the left main landing gear door amber light extinguished. The doors were cycled several times and no faults were found. A decision was made to replace the left closed sensor. No further faults were found and the aircraft was returned to service. This aircraft had a similar occurrence the previous day (see A16W0021/CADORS#2016C0176).
A Jazz de Havilland DHC-8-402 (C-GGMN/JZA8551) from Calgary, AB (CYYC) to Victoria, BC (CYYJ) requested with departure to return due to a gear door indication. JZA8551 requested aircraft rescue and fire fighting (ARFF) on standby for landing. The aircraft landed with no issues; no other impact to operations.

January 8, 2015

Incident at TERRACE BC (CYXT)

Update from Maintenance & Manufacturing: On approach, the crew selected gear down and only the left hand (LH) Main Gear extended. The right hand (RH) Main Landing Gear (MLG) door partly opened but the gear did not extend on the RH side. The nose gear indicated that the doors opened but the nose gear did not extend. The approach was aborted and the crew completed the Emergency check lists. The gear was selected up and extended via an alternate extension and the aircraft landed with no further problems. Maintenance completed several tests of the landing gear Proximity Sensor Control Unit (PSEU) with no faults found. When the aircraft was jacked the Weight on Wheels (WOW) caution light came on after the weight was off the gear signalling that at least one WOW sensor was in disagreement with the remaining sensors. Testing at the PSEU revealed that the WOW#2 sensor on the Nose Landing Gear (NLG) was showing a weight on wheels condition at all times. Further inspection found that the target for the sensor was missing due to failure of the bond to the landing gear shock strut. The sensor target was subsequently replaced. An SDR has been filed and the appropriate vendors advised.
A Hawkair Aviation Services de Havilland DHC-8-102 (C-FDNG/HA102), from Vancouver, BC (CYVR) to Terrace, BC (CYXT), after cancelling IFR inbound to Terrace, declared a gear issue and over flew the runway requesting a visual check by Flight Service Station (FSS). FSS and an airport vehicle operator both confirmed that the right landing gear and nose wheel were not deployed. When asked, the pilot said they would work on the issue and assistance was not required. Area Control Centre (ACC) advised. After approximately 15 minutes of circling low level 25 miles South of the airport, pilot reported gear issue resolved and aircraft subsequently landed at CYXT without further incident. The only impact to operations was a brief delay to another IFR inbound, a Carson Air (CA711), which slowed its approach as HA102 worked on the problem.

March 9, 2015

Incident at 60NM WSW TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

UPDATE: TSB Report#A15O0054: Jazz flight JZA7985, a Canadair CL-600-2B19 aircraft, departed Toronto LBPIA on an IFR flight to St. Louis. During the initial climb, when the landing gear was selected up, the flight crew received a nose gear disagree indication. The flight crew decided to return to Toronto where the aircraft landed without further incident. Maintenance was unable to duplicate the defect with the aircraft on jacks and no fault was logged in the PSEU. Maintenance suspects the nose landing gear selector valve may have been at fault. This selector valve was replaced along with nose gear priority valve and #3 hydraulic reservoir. The aircraft was returned to service with and no further problems have occurred.
A Jazz Bombardier CL-600-2B19 (JZA7985) from Toronto, ON (CYYZ) to St. Louis, MO (KSTL) reported a landing gear issue 60 west-southwest of CYYZ and returning to CYYZ. Priority was given to the aircraft which landed safely at 1351Z.

January 12, 2015

Incident at In the vicinity of: TORONTO / LESTER B. PEARSON INTL ON (CYY

An Air Canada Rouge Boeing 767 300 (ROU1820) from Montreal, QC (CYUL) to Toronto, ON (CYYZ) indicated they had a slat issue and requested a landing Runway 23. The aircraft did not declare an emergency and landed Runway 23 at 1616Z.
Update: Flight correction: Air Canada Rouge (ROU1820) original destination was Cancun, Mexico (MMUN), not Toronto, ON (CYYZ). The flight diverted to Toronto, ON (CYYZ).
UPDATE: TSB Report#A15O0010: On departure from CYUL the Air Canada Rouge Boeing 767-300 (Flt 1820, C-FMWU) was on climb out and the crew selected flaps up. A Leading Edge Slat Asymmetry EICAS annunciator light illuminated and the crew noted that the flap indicator was between 1 and full up. No abnormal roll was noticed during the climb out. Maintenance advised the crew to divert to Toronto (CYYZ). QRH procedures were followed and prior to landing ATC were advised of the flap issue and that the landing speed would be higher than normal. ARFF was requested to be on standby to check for overheating brakes. The landing was uneventful and #1 engine was shut down on the taxiway to allow ARFF to check the brakes. At the gate maintenance checked the PSEU for fault codes and found the intermediate target gap sensor out of tolerance. The sensor was replaced IAW AMM procedures. The aircraft was returned to service after a satisfactory test flight.

January 24, 2015

Incident at WINNIPEG / JAMES ARMSTRONG RICHARDSON INTL MB (CYWG)

A Cargojet Boeing 767-223 (C-GKLY / CJT551) from Winnipeg, MB (CYWG) to Calgary, AB (CYYC) departed CYWG and shortly after departure reported a mechanical issue affecting the aircraft flaps. The aircraft reported "Pan", requested emergency equipment and landed at 1051Z without incident. No operational impact.
UPDATE: TSB Report# A15C0007: The Cargojet Airways Ltd. Boeing 767-223, C-GKLY, operating as flight CJT551 was taking off from CYWG, Winnipeg. After rotation, the "Low airspeed" and "Over-speed" tapes fluctuated toward the actual airspeed simultaneously. The crew retracted the flaps from "Flaps 5" to "Flaps one" and noted that the flap indication was flicking back and forth between "Flaps zero" and "Flaps one". There were also flashing annunciator indications of "Emergency doors", "Main entry doors" and "Lower cargo doors". There was also a clicking noise originating from the overhead panel. The crew selected the flaps "up" and received a flap asymmetry warning and the EICAS came on. The crew declared PAN with emergency equipment and initiated a return to Winnipeg. The QRH items for flap asymmetry were performed. The subsequent landing was uneventful with ARFF responding. Maintenance personnel replaced the PSEU (proximity sensor encoding unit). An operational check was carried out and the aircraft was returned to service. The aircraft was underweight for landing therefore an over-weight landing inspection was not required.

June 12, 2014

Incident at 50 E HALIFAX / STANFIELD INTL NS (CYHZ)

A Jazz de Havilland DHC 8 102 (C-GJIG/ JZA8814) from Halifax, NS (CYHZ) to Sydney, NS (CYQY) reported having a 'systems issue' and gave no further details, requested to return to CYHZ. No assistance required. Arrived at CYHZ at 1659Z. No impact on the operation.
Update: Follow-up information received from National Operations ? Airworthiness [2014-06-19]: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. The CASI contacted the operator and was advised that on climb out of Halifax, the flight crew received a right main landing gear unsafe indication. The aircraft returned to Halifax. Maintenance staff checked the fault codes in the Proximity Switch Electronic Unit (PSEU) and tested all proximity sensors. The PSEU was replaced. The aircraft was returned to service after verifying indication and operation. There has been no recurrence. The CASI was satisfied with the information provided and advised that no further Transport Canada follow-up was required at this time.

September 23, 2013

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

UPDATE: TSB Report#A13Q0165: The DASH8-400, flight JZA7675, operated by Jazz was on final when the crew reported a gear indication issue and conducted a missed approach. The crew completed the required checks and declared an emergency prior to landing. The landing was without incident. Maintenance reported the problem was caused by landing gear control handle sending faulty message to PSEU. Corrective action was taken and the aircraft back in service.
A Jazz Aviation de Havilland DHC 8 400 (JZA7675), from Charlottetown (CYYG) to Montréal (CYUL), started to pull up on Runway 24L due to a faulty landing gear indication. It landed without incident on Runway 24L at 1630Z. No impact on operations.

April 9, 2013

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

Update #1 : Aircraft registration was added. According to information from the Maintenance division, gears did not lower normally (manual). The proximity sensor electronic unit (PSEU) was replaced.
An Air Inuit de Havilland DHC 8 102 (AIE832), from CYUL to CYQB, asked to return to CYUL for an unspecified reason. The aircraft pulled up on Runway 06L and later indicated that it had landing gear problems. The aircraft landed at 1255Z. No emergency was declared. No impact on operations.

February 11, 2013

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

Update #1 : According to information from the Maintenance Division : Indication problem only. Aircraft jacked and LG retraction successfully performed (up and locked). Proximity sensor electronic unit (PSEU) replaced and functional tested as per AMM. Problem did not resume.
HYD102, a de Havilland Dash 8 operated by Hydro-Québec, was on an IFR flight from Montréal/Trudeau (CYUL) to Rouyn-Noranda (CYUY). At 1242Z, the crew asked to return to the airport due to a problem with the landing gear. No emergency was declared. No impact on ATC operations.

October 24, 2013

Incident at ST. THERESA POINT MB (CYST)

A Perimeter Aviation de Havilland DHC 8 102 (C-GWPS/ PAG610) from Island Lake, MB (CYIV) to St. Theresa, MB (CYST) reported final for runway 22 at CYST at 2155Z. The aircraft then reported circling the field with a gear issue. Assistance was declined. The aircraft reported the issue resolved at 2206Z and landed safely at 2210Z. No operational impact.
Update Maintenance & Manufacturing: PSEU re-racked nose gear 'down' annunciations checks serviceable. The nose wheel steering was found to be unserviceable although the ?No nose steer? caution light was not illuminated. Nose gear junction box connectors cleaned, PSEU replaced. Ground run NWS functions/swings tested serviceable. Aircraft released to service.

February 6, 2012

Incident at Kelowna

UPDATE from Kelowna TCC Airworthiness; Flight JZA8393 aircraft #312 registration C-GABO did an overshoot and orbited in a holding area while consulting with the company Maintenance Operational Control. A manual gear deployment was performed and a successful gear free fall conducted with 3 green lights indicated. The crew clarified they did not declare an emergency however the tower called ARFF to stand by. The aircraft landed safely and was parked on the ramp in Kelowna (CYLW) and gear lock pins installed with flagging removed. Crew reported it was not an indication problem as upon gear down selection one gear did not come down. A ferry permit was obtained from Halifax and the aircraft will ferry to Vancouver gear down once icing conditions lifted YLW. The crew advised they were completing an incident report for entry into their SMS program.
UPDATE from TSB: A12P0016: CYLW JZA 8393, DHC-8 (C-GABO ser 248) While on approach to Kelowna the right main gear did not extend. The crew carried out the alternate gear extension procedure and the gear was extended giving three green lights. The crew did not declare an emergency, and the aircraft landed without further incident in Kelowna. The aircraft was serviced and repaired. The landing gear PSU was replaced and gear swing completed. Aircraft returned to service. PSEU P/N 8-586-01.
An Air Canada Jazz deHavilland DHC8 operating flight JZA8393, IFR Calgary (CYYC) to Kelowna (CYLW), had gear indication fault, conducted missed approach then returned to land safely. Emergency vehicles on standby.

January 20, 2012

Incident at VANCOUVER INTL BC (CYVR)

UPDATE from TSB: A12P0012: The DeHavilland DHC-8, operating as Jazz flight JZA208, departed Prince George for Vancouver, BC. After departure, when the gear was retracted, all 3 gear lights were red. The crew cycled the gear and received 3 green when the gear was down but 3 red when the gear was selected up again. The crew confirmed that all gear were up and all gear doors were closed, conferred with company maintenance and continued the flight to Vancouver. On extension prior to landing, the gear went down normally and the crew received 3 green lights indicating gear down and locked. The aircraft landed uneventfully. Company maintenance checked the PSEU memory for faults but found none. Landing gear swings confirmed a fault. The landing gear selector (P/N 535201-1) was replaced and the aircraft retested with no further faults found. This occurrence was one of three involving Jazz DHC-8 aircraft with gear indication in the Pacific Region within a 24 hour period.
An Air Canada Jazz Dehavilland DHC8-311 operating Flight JZA208, IFR Vancouver (CYVR) to Prince George (CYXS), requested to return to CYVR as a result of no gear indication. A/C landed safely Rwy08L at 0300z. No impact to operations.

March 18, 2011

Incident at VAL-D'OR QC (CYVO)

C-GJOP, a de Havilland Dash 8 operated by Air Creebec as flight number CRQ502, was preparing for an IFR flight from Val d'Or (CYVO) to Timmins (CYTS). The crew reported having a problem with the landing gear and cancelled its departure authorization when it was in position on the threshold of Runway 36. The aircraft returned to the apron. No impact on ATC operations.
Update #1: According to Ontario Aircraft Maintenance Department information: When the aircraft was lining up for departure the landing gear warning horn sounded and the nose gear unsafe light illuminated. The aircraft was shut down and gear locks installed. After confirmation of the gear being locked by using the alternate gear light and visual confirmation by an AME that was onboard the aircraft the crew decided to taxied back to the gate. The aircraft was repositioned to YTS on a flight permit so that proper troubleshooting could be completed. Once in YTS the aircraft was put on jack and several gear swings completed with no fault found. As a precaution the PSEU was replaced and the aircraft returned to service.

July 21, 2011

Incident at VANCOUVER INTL BC (CYVR) (Aerodrome, runway or taxiway shutdown)

UPDATE from TSB A11P0111: A Jazz DHC-8-300, flight JZA279, C-GLTA, was enroute IFR from Prince Rupert to Vancouver. During the flight the crew advised that the gear doors continued cycling, also the anti skid caution light was on. YVR ATC had the emergency response services on standby. The crew did a normal gear extension for arrival and had no issues. Aircraft removed from service. PSEU (a landing gear component position sensor and control unit) replaced, gear swings completed and the aircraft returned to service.
An Air Canada Jazz DeHavilland DHC 8, operating flight JZA 279, enroute Vancouver International (CYVR) from Prince Rupert (CYPR), advised that they were experiencing gear and instrument problems. Tower was advised and initiated Emergency Standby. At 1924z the pilot reported gear down and locked. The aircraft landed on runway 26R at 1930z without further incident. Runway 26L remained closed until 1932z for inspection. Minimal operational impact.

April 5, 2011

Incident at en-route from Boston to Ottawa

UPDATE Supplemental information received from T.S.B. Daily Notification [#A11O0042]: The (Air Canada) Jazz Air Limited Partnership Bombardier CL-600-2B19 aircraft (C-FWJB, operating as flight JZA8045) was en-route to Ottawa (M-CIA) at FL250 when the flight crew noticed the cabin altitude climbing. The flight crew contacted ATC and requested to descend, however, ATC told the crew to standby. Shortly after the cabin altitude was climbing through 14,000 feet ASL and the flight crew requested an emergency descent after they dawned the oxygen masks. ATC provided the descent clearance and the aircraft eventually levelled off at 10,000 feet ASL. The aircraft continued its flight to Ottawa (M-CIA) and, on approach, ATC offered ARFF to be on standby but the flight crew declined. The captain provided an explanation of the event to the passengers and there was no reported adverse reaction from the passengers. The aircraft performed an uneventful landing in Ottawa and no injuries were reported. The flight crew reported that cabin pressurization was lost while the controller was in AUTO mode. There were no door seal squeals or EICAS messages indicating a CAB PRES FAIL. Maintenance found an insulation blanket sticking through both outflow valves. The blanket was removed and re-secured to the floor. After a ground run check, maintenance found that values differed between the Pressure Controllers and the Cabin Pressure Acquisition Module (ACPM). The ACPM receives cabin altitude data, and static pressure data. It provides cabin altitude, cabin rate of change and differential pressure information. In addition, it will deploy the passenger masks during depressurization and signals the Proximity Sensor Electronic Unit (PSEU) to automatically turn on the FASTEN SEAT BELT and NO SMOKING signs. Maintenance replaced the ACPM and values for all three components now match. The aircraft was returned to service.
The Jazz Air Limited Partnership Bombardier CL-600-2B19 (RJ100) Regional Jet aircraft (operating as flight JZA8045) was on a scheduled IFR flight from Boston (General Edward Lawrence Logan) International Airport, MA (U.S.A.) (KBOS) to Ottawa (M-CIA) (CYOW). The Federal Aviation Administration reported that while in U.S. airspace, the flight crew declared an emergency due to a pressurization problem. The aircraft descended to an altitude of 10,000 feet and continued to Ottawa. Upon entry into Canadian airspace, the flight crew reported to NAV CANADA staff at Montréal Centre that all was normal. No emergency equipment was requested or dispatched. The aircraft landed without further incident at 1505Z. Ops. impact -- unknown.

March 8, 2011

Incident at TORONTO / BILLY BISHOP TORONTO CITY AIRPORT ON (CYTZ)

The Porter Airlines Inc. de Havilland DHC-8-402 aircraft (operating as flight POE262) was concluding a scheduled IFR flight from Ottawa (M-CIA) (CYOW) to Toronto (BB/TCA) (CYTZ). The flight crew declared an emergency at 2030Z due to a landing gear unsafe indication for the right main landing gear. The flight crew elected to divert the aircraft to Toronto (LBPIA) (CYYZ). Priority handling was provided and ARFF services were called out. The aircraft landed on runway 15L at 2053 without incident. Ops. impact -- unknown.
UPDATE Supplemental information received from T.S.B. Daily Notification [#A11O0028]: POE262, a DHC-8-402 airplane (C-GLQK), was on approach to the Toronto (Billy Bishop)/Toronto City Airport. When the landing gear was extended, the right main landing gear did not indicate down and locked. Indications were consistent with a failed indicator light. The abnormal checklist was initiated, an emergency was declared and the flight diverted to Toronto (LBPIA). ARFF services were placed on standby and the flight landed 20 minutes later without further incident. Maintenance verified that the PSEU was serviceable. The right main landing gear indicator light bulb was replaced and the airplane was returned to service.

February 22, 2011

Incident at EDMONTON INTL AB (CYEG)

UPDATE The landing gear failed to retract C-FLSX DHC-8-100. Maintenance checked the PSEU fault codes and found several prox switches that needed adjustments these were completed the landing gear swung and the aircraft released.
NCB824 DHC8 102 after departure reported a gear indication issue and returned to Edmonton. The aircraft landed at 2058Z. No operational impact.

October 14, 2010

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

UPDATE from TSB; Air Canada Boeing 767-300 aircraft (C-GHLT), operating as flight ACA084, was on a scheduled IFR flight from Toronto LBPIA to Tel Aviv. Shortly after take-off the flight crew from ACA084 declared an emergency due to leading edge slat asymmetry. Emergency vehicles were called out. ACA084 dumped fuel then returned to land on Runway 33R and taxied to the gate without further incident. WJA409 and ACA877 were instructed to overshoot Rwy 05. Maintenance found several fault codes shown on the BITE for Flap/Slat Electronic Unit (FSEU) & Proximity Switch Electronics Unit (PSEU). As per FIM 27-81-00, PSEU replaced IAW AMM 32-09-04. Sensor S302 (R/H SLAT #10 INBD) was replaced as per AMM 27-88-01.
The Air Canada Boeing 767-300 aircraft (operating as ACA085) was concluding a scheduled IFR flight from Tel Aviv (Ben Gurion) International Airport, Israel (LLBG) to Toronto (LBPIA) (CYYZ). The aircraft was inbound to Toronto when the flight crew reported a partial navigation system problem. No emergency was declared. Priority was given to the aircraft. The aircraft landed on runway 05 at 2330Z without incident.

October 6, 2010

Incident at Vicinity of 80 NM East of Dryden NDB (YHD)

UPDATE Supplemental information received from TSB Daily Notification [A10C0181]: C-FIWS (operating as Westjet 517) was en-route from Montreal (PETIA) (CYUL) to Calgary International Airport (CYYC) at FL400. As the aircraft was above Thunder Bay, the cabin altitude warning horn sounded. The flight crew donned their oxygen masks and carried out the emergency checklist items. The cabin pressure was normal and the flight crew suspected a faulty take-off configuration warning, as they were unable to silence the warning horn. The flight crew then requested a clearance to divert to Winnipeg (JARIA). Upon landing the PSEU warning light illuminated. A maintenance inspection revealed a faulty spoiler interlock valve proximity sensor. The sensor was replaced and the aircraft was returned to service.
The Westjet Airlines BOEING 737-76N aircraft, operating as WJA517 was on a scheduled IFR flight from Montreal (PETIA) (CYUL) to Calgary International Airport, (CYYC). WJA517 was westbound at 40,000' (FL400) and advised NAV CANADA staff at (ATC) that due to a configuration alarm they needed to descend to FL300 and requested a diversion to Winnipeg (JARIA) (CYWG). WJA517 was re-cleared accordingly and landed at CYWG at 1436Z without incident. No emergency declared nor assistance required. Ops. impact - unknown

December 4, 2010

Incident at FORT MCMURRAY AB (CYMM)

UPDATE TSB reported that the Air Canada Jazz Canadair CL600-2B19 (RJ 100 C-FSKE) was operating as JZA 376. After departure from Fort McMurray, AB the nose gear failed to retract. The crew elected to divert to Edmonton International airport due to insufficient fuel to make Calgary. The Proximity Sensor Electronic Unit (PSEU) was replaced and the aircraft was returned to service.
JZA 376, a CRJ 100 operated by Jazz, departed Fort McMurray for Calgary and the crew reported gear problems shortly after takeoff. They decided to divert to Edmonton. No services were required for arrival and the aircraft landed without further incident at 0207z.

June 16, 2009

Incident at DAWSON CREEK BC (CYDQ)

Central Mountain Air Dornier 328 operating IFR flight GLR802 Dawson Creek to Vancouver, reported rejected takeoff RWY 24 due to cockpit indication. Backtracked and departed RWY 24 at 1825.
UPDATE from Commercial & Business Aviation: The cause of the reject was a door open warning in the flight deck. We had this the previous week with the other Dornier. That turned out to be quite an issue for us. Maintenance was able to clear the fault code from the box in YVR, but it came back again in YDQ. We ended up scrambling 1900s and the other Dornier from all over the province to get the passengers moved, and since we knew we were dealing with an indication problem we ferried the faulty plane back to YYC. In the hangar with 2 Dorniers beside each other, the maintenance crew did some trouble shooting to try to isolate the faulted component, since it wasn`t clear exactly where the problem was. They swapped the PSEU between the planes to try to see if they could replicate the fault, but they were not able to do so right off. The faulty component was eventually identified and dealt with. I don`t have a corrective action plan for this. This is a modern aircraft type of snag that involves complex systems to do simple things with a high degree of reliability.

April 10, 2009

Incident at VANCOUVER INTL BC (CYVR)

UPDATE from TSB A09P0079: The Air Canada Regional (Jazz) CRJ-705 aircraft, C-FTJZ, operating as JZA576, took off from Vancouver, BC for Saskatoon, SK. When the gear handle was selected up the landing gear did not retract. The crew completed the appropriate QRH checklist but the gear remained extended, although all hydraulic pumps were on and all hydraulic indications appeared to be normal. The crew decided to return to Vancouver. After burning off fuel to reduce to maximum landing weight, the aircraft landed at Vancouver without further difficulty. No emergency was declared. Maintenance reset the PSEU, completed some gear swings, and returned the aircraft to service.
Air Canada Jazz Canadair CRJ 900 operating Flight JZA576, IFR Vancouver to Saskatoon, reported a gear issue on departure. Aircraft burnt off fuel and returned to CYVR.

April 11, 2009

Incident at VICTORIA INTL BC (CYYJ)

UPDATE from TSB A09P0082: The Air Canada Regional (Jazz) DHC-8-100 aircraft, C-GANQ, operating as JZA81, was on final approach to runway 09 at Victoria, BC after a flight from Vancouver. After the landing gear locked down the weight on wheels caution light came on. The crew executed a go-around and made a visual circuit while consulting with the company by radio, since the aircraft would be grounded after landing. The aircraft landed on runway 09 without further event. Subsequently, the aircraft was ferried to Vancouver for maintenance. PSEU codes showed no weight on wheels faults. After gear swings the aircraft was returned to service.
Air Canada Jazz Dehavilland DH8A flight JZA81, IFR Vancouver to Victoria overshot runway 09 on approach and indicated they had a caution light. The aircraft circled and landed safely. ARFF responded as a precaution.

October 27, 2009

Incident at TORONTO / BILLY BISHOP TORONTO CITY AIRPORT ON (CYTZ)

UPDATE Porter Airlines flight POE388 (DHC-8-400, C-GLQF) was inbound to Toronto City Centre Airport(CYTZ) runway 26 and the landing gear would not extend when selected. The flight crew advised Air Traffic Control (ATC) and Porter Airlines flight operations of a gear problem, and were about to action the Quick reference Handbook (QRH) when the landing gear extended. ARFF were on standby for an uneventful landing. The aircraft had a similar issue the day before while inbound to Chicago Midway International Airport Chicago, IL,U.S.A., (KMDW) and was serviced in Chicago and ferried back to Toronto for maintenance checks. This incident happened on the second leg of the day. The aircraft was removed from service and maintenance replaced the proximity sensor electronic unit (PSEU), landing gear selector handle and under carriage selector valve. The aircraft was returned to service and has had no further incidents
The Porter Airlines Inc. de Havilland DHC-8-402 aircraft (operating as flight POE388) was concluding a scheduled IFR flight from Chicago (Midway) International Airport, IL (U.S.A.) (KMDW) to Toronto (City Centre) Airport (CYTZ). The flight crew advised of a landing gear problem and remained VFR in the area to attempt to resolve the problem. The aircraft subsequently landed at 2031Z without incident. ARFF services had been called out for standby. Ops. impact -- none.

June 28, 2009

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

From TSB Daily Notification Log 07-07-2009 Occurrence Summary A09O0126: The Air Canada Jazz Bombardier CL-600-2B19 aircraft (C-GKGC, Flt 8606) was on final approach when the landing gear was selected down. The landing gear indicated three green lights (down & locked) but shortly after the crew received a Gear Disagree indication followed by a Nose Gear Disagree amber light indication. The crew conducted a missed approach and attempted to follow the QRH procedures. QRH procedures were not clearly identified for the combination of indications the crew had received so they contacted MOC for further assistance. MOC advised the crew to perform an alternate gear extension at the next gear down selection. No further faults were received during the next gear selection, but an emergency was declared. ARFF was standing by for the uneventful landing. Maintenance checked the nose landing gear prox sensors gaps and found no fault. They also interrogated the Proximity Sensor Electronic Unit (PSEU) and found no faults indicated. Several landing gear swings were conducted without fault. After a successful test flight the aircraft was returned to service.

September 4, 2009

Incident at FORT MCMURRAY AB (CYMM)

On departure out of Fort McMurray, AB when the gear on the Air Canada Jazz CRJ 100/200, C-FVMD, was selected up, a gear unsafe master warning message was received along with a loud rotary thumping noise. The gear eventually completed the retraction without recycling, and the thumping noise continued for about 30 seconds longer. The crew called the CYMM tower and requested a runway check for tire debris, none was found. As the flight continued to Calgary at FL 320, the autopilot failed and the crew immediately informed ATC that they were unable to comply with RVSM. The flight was kept above FL 280 due to lower traffic entering holds into Calgary. The crew could not contact maintenance via CYEG agris or the direct dispatch frequency (which they over-flew) to inform them of the situation, and were only able to contact the company within range of Calgary. Maintenance interrogated the Proximity Sensor Electronic Unit (PSEU) for faults, and after replacing the PSEU, gear swings were completed without any faults found. Autopilot servo pin tests were completed, and although the initial voltage check indicated the LH servo was to be replaced at the next major inspection, subsequent testing failed to duplicate the error.

March 1, 2009

Incident at IQALUIT NU (CYFB)

MPE 600, a DHC-8 operated by Canadian North, departed Iqaluit for Igloolik and when the aircraft was 40 NM north of YFB, the crew advised they were returning due to an unspecified problem. The flight landed uneventfully at 1956z. Three hours later at 2245z, MPE 600 was once again en route to Igloolik and when 7 NM north of YFB, the crew reported another problem and returned to YFB. One other flight was delayed while the DHC-8 turned back. The cause of these two turnbacks is not known.
UPDATE Maintenance and Manufacturing reported that the first turnback was due to a "Weight On Wheels" caution light. The PSEU (Proximity Switch Electronics Unit) was replaced and the Circuit Breaker was found popped. The second air return was due to the same problem (WOW caution light). A PSEU fault showed the left main gear #1 sensor.

February 12, 2009

Incident at CALGARY INTL AB (CYYC)

UPDATE A09W0027: The Continental Airlines Boeing 737-700, N33714, was operating as flight COA1429 from Houston, TX to Calgary, AB. Upon flap selection on approach into Calgary, the flaps ceased movement at 6°. The flight crew conducted a missed approach and consulted the QRH. A second approach and landing was conducted with the flaps at 6° with ARFF standing by. Maintenance performed a FSCU and PSEU bite check which identified a lagging fault in the left flap position sensor. The fault was cleared, the system ground checked and aircraft returned to service.
COA1429 (Continental Airlines USA) reported a flap problem after overshooting runway 34 and requested services be on standby for their arrival. Aircraft landed without further incident at 2132z.

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