May 20, 2019

Incident at 4NM MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

Although it had been cleared for 5 000 ft and had correctly read it back, a Government of Canada Department of National Defence Raytheon Beechcraft T-6 Texan II (SNAPR13) from Montreal/Trudeau, QC (CYUL) to Sault Ste. Marie, ON (CYAM) continued its climb to FL230. The error was detected when SNAPR13 passed 5 600 ft the moment it had been cleared again for 5 000 ft. No impact.

February 27, 2019

Incident at KANIK intersection

An American, corporately registered Cessna 525A (N125BJ) from Wichita, KS (KICT) to Ottawa/MacDonald-Cartier Intl, ON (CYOW) did not respect the restriction of FL230 and below at KANIK on the CAPTL4 arrival (ARR). No operational impact.

January 16, 2019

Incident at BAIE-COMEAU QC VOR/DME (YBC) (Weather balloon, meteor, rocket, CIRVIS/UFO)

A Provincial Airlines de Havilland DHC-8-102 (C-FDND/PVL1910) from Quebec/Jean Lesage, QC (CYQB) to Sept-Îles, QC (CYZV), which was level at FL230 heading north-east towards CYZV, reported a light that was red, green, then white, which rose and fell rapidly. PVL1910 could not evaluate the distance between itself and this light.

April 20, 2019

Incident at YNY 250 / 10

A Jazz deHavilland DHC-8-311 (C-FADF/JZA8426) from Kamloops, BC (CYKA) to Calgary, AB (CYYC) initially cleared to FL230 was instructed to stop climb at FL210, and continued climb through FL217 before controller could stop them.

February 27, 2019

Incident at 103NM PORT HARDY BC VOR/DME (YZT)

A United States Air Force Lockheed C-130 (Hercules) (AXIS43) from Elmendorf Air Force Base, Alaska (PAED) to Naval Air Station Whidbey Island, WA (KNUW) experienced radio failure while enroute to KNUW at FL230. The aircraft was eventually able to transmit on 243.0 only. AXIS43 landed safely at KNUW.

September 10, 2019

Incident at 4322N / 07950W

A Delta Airlines Airbus A320-212 (N335NW/DAL1434) from Buffalo, NY (KBUF) to Minneapolis-St. Paul, MN (KMSP) climbing to FL300 came in conflict with a Skyservice Business Aviation Inc. Beech B300 (C-FIBR/SYB529) from Windsor, ON (CYQG) to Peterborough, ON (CYPQ) at FL230.

August 4, 2019

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

An Air Canada Rouge Airbus A319 (ROU1975) on a flight from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Nanaimo, BC (CYCD) was instructed to climb to FL230 while inbound traffic, an Air Canada Airbus A321-211 (ACA605) on a flight from Halifax/Stanfield Intl, NS (CYHZ) to Toronto/Lester B. Pearson Intl, ON (CYYZ) was descending to 8000 feet.

June 14, 2019

Incident at 4418N / 07654W

At 1045Z, Air Nunavut Ltd. Dassault Falcon 10 (C-GSXJ/BFF102) from St.John, NB (CYSJ) to Toronto/Oshawa, ON (CYOO) was cleared to 14,000 ft and was instructed to change frequency. BFF102 read back instructions. At 1047Z, BFF102 changed frequency and contacted air traffic control (ATC) stating they were through FL230 for 7000 ft. BFF102 was cleared again to 14,000 ft. No operational impact.

April 30, 2019

Incident at THUNDER BAY ON (CYQT)

Shortly after departing Runway 25 at Thunder Bay, ON (CYQT), a 2389369 Ontario Limited Cessna 172M (C-GWMF) from Thunder Bay, ON (CYQT) to Winnipeg/James Armstrong Richardson, MB (CYWG) was instructed to turn left to a heading of 340 degrees and to climb to FL230. The aircraft read the instructions back correctly but was subsequently observed turning beyond 340 degrees to approximately 300 degrees. No operational impact as both the tower and terminal controllers noticed the error and slightly delayed the departure of another aircraft from the same runway. Automatic Departure Release (ADR) was in effect.

April 18, 2019

Incident at TALEB intersection

A Porter Airlines de Havilland DHC-8-402 (C-GLQD/POE261) from Toronto/Billy Bishop Toronto City, ON (CYTZ) to Ottawa, ON (CYOW) was cleared to FL210. POE261 climbed to and levelled at FL230. POE261 re-cleared to FL230. No operational impact.

February 27, 2019

Incident at DELVA intersection

A Cargojet Airways Ltd. Boeing 767-300 (CJT301) from Hamilton, ON (CYHM) to Calgary Intl, AB (CYYC) checked in while climbing through 7300 feet for the cleared altitude of 6000 feet. The controller re-cleared CJT301 to maintain 14000 feet. At 1744Z, CJT301 was cleared to maintain FL230 and read back the same. CJT301 was seen to climb to 14600 and then descend back to 14000, at which the point the controller re-cleared the flight to FL230. No conflicts or operational impact.

March 6, 2019

Incident at In the vicinity of: OTTAWA / MACDONALD-CARTIER INTL ON (CYOW)

A WestJet Encore de Havilland DHC-8-402 (WEN3459) from Ottawa/Macdonald-Cartier Intl, ON (CYOW) to Toronto/Pearson Intl, ON (CYYZ), at 1359Z, was authorized to FL220, with a read back that appeared correct. WEN3459 was then observed at FL230, and was questioned and re-authorized to FL220. No impact on operations.

January 7, 2019

Incident at 12NM OTTAWA/MACDONALD-CARTIER INTL (YOW)

A SkyWest Airlines Bombardier CL-600 2B19 (series 200) (N461SW/SKW4875) from Ottawa/Macdonald-Cartier, ON (CYOW) to Detroit Metro/Wayne County, MI (KDTW) was cleared by the Concordia sector to climb to FL280. The sector ends at FL230 and no coordination was carried out with the Picton sector. No impact on operations.

May 25, 2019

Incident at 45 NM E Denver (KDEN)

TSB #A19F0134: C-FLWE, an Embraer ERJ 190-100 aircraft operated by Air Canada, was conducting flight ACA1038 from Denver Intl (KDEN), CO to Toronto/Lester B. Pearson Intl (CYYZ), ON with 4 crew members and 87 passengers on board. Shortly after the departure from KDEN, the flight crew received a LANDING GEAR WEIGHT ON WHEELS SYSTEM fail message. The flight crew stopped the climb at FL230, executed the QRH and, in discussion with the operator’s Maintenance Control Centre, decided to return to KDEN. No emergency was declared, and the aircraft landed slightly overweight without further incident. The operator’s maintenance carried out a wiring check as per the Fault Isolation Manual (FIM), and no faults were found. The Proximity Sensor Electronic Module (PSEM) 2 was replaced in accordance with (IAW) the Aircraft Maintenance Manual (AMM), and the aircraft was returned to service.

July 30, 2019

Incident at 6900N / 09000W

An Israeli Air Force Lockheed C-130 (Hercules) (IAF065) from Yellowknife, NT (CYZF) to Keflavik, Iceland (BIKF) was observed on radar at FL230 when last cleared altitude was FL190 while in controlled airspace. IAF065 was re-cleared to destination, no further impact on operations.

Incident at 6900N / 09000W

An Israeli Air Force Lockheed C-130 (Hercules) (IAF066) from Yellowknife, NT (CYZF) to Keflavik, Iceland (BIKF) climbed to FL230 without clearance. Separation was not assured with an Israeli Air Force Lockheed C-130 (Hercules) (IAF065) from Yellowknife, NT (CYZF) to Keflavik, Iceland (BIKF), who also climbed to FL230 without clearance. Surveillance separation was established. No further impact on operations.

June 16, 2019

Incident at 85NM WINNIPEG / JAMES ARMSTRONG RICHARDSON INTL MB (CYWG)

A Voyageur Airways de Havilland DHC-8-314 (C-FEXZ/VAL800) from Pikangikum, ON (CYPM) to Winnipeg/James Armstrong Richardson, MB (CYWG) was at FL240 and reported traffic alert and collision avoidance system (TCAS) alert and advised turning right. The traffic in vicinity was a Perimeter Aviation de Havilland DHC-8-314 (C-GJYZ/PAG1571) from Winnipeg/James Armstrong Richardson, MB (CYWG) to Elk Island, MB (CKZ3) climbing to FL230. Both aircraft were given traffic information regarding each other and both pilots advised having the other on TCAS. At closest proximity the aircraft were 1 mile laterally and 1200 feet vertically apart. No impact to operations.

May 20, 2019

Incident at 5642n / 11707w

A CanWest Air Beech 200 (CWA925) from Peace River, AB (CYPE) to Fort Vermilion, AB (CEZ4) was cleared to FL210. The controller observed aircraft climbing through FL215 and queried pilot. The controller cleared CWA925 FL230. No impact to operations.

February 1, 2019

Incident at 50NM N YELLOWKNIFE NT (CYZF)

The pilot of a First Air Aerospatiale ATR 42-500 (C-FTID/FAB852) from Yellowknife, NT (CYZF) to Cambridge Bay, NU (CYCB), after departure and when approximately 50NM North of CYZF, climbing through F220, declared an emergency, requiring immediate descent to 10,000 feet, and advised that they intended to return to CYZF. The aircraft landed safely at CYZF at 1919Z. No impact to operations.
Update TSB Report #A19W0017: C-FTID, an Aerospatiale ATR42-500 aircraft operated by First Air, was conducting flight FAB852 from Yellowknife (CYZF), NY to Cambridge Bay (CYCB), NT with 3 crew members and 22 passengers on board. Approximately 60nm NNE of CYZF, after leveling at FL230, the flight crew received a master warning indication for "EXCESS CABIN ALTITUDE". The crew completed the applicable memory items and carried out the applicable QRH procedure. An emergency was declared with ATS and the decision to return to CYZF was made where an uneventful landing was completed. Company maintenance found a damaged ground air conditioning duct check valve. The part was replaced, ground checks/runs were completed, and the aircraft was returned to service.

January 11, 2019

Incident at 67NM CALGARY INTL AB (CYYC)

A Jazz de Havilland DHC-8-300 (JZA8408) from Kelowna, BC (CYLW) to Calgary International, AB (CYYC) declared an emergency (PAN PAN) due to pressurization issues. The aircraft landed safely on Runway 35L at 0246Z. No impact on operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. During cruise, at FL230, the crew received the master warning light. Cabin pressure was at 12,500 feet and climbing. The crew declared a PAN PAN and preformed an emergency descent down to 14,000 feet. They ran the checklist, but were unable to regain control of the cabin pressure. Once clear of the mountains, the crew cancelled the PAN PAN and proceeded with a normal arrival. Maintenance replaced the Cabin Pressure Control Selector and the Cabin Pressure Controller. Satisfactory test flight completed and pressurization functional check carried out with no further fault noted. Two Service Difficulty Reports were submitted for this event.
Update TSB Report #A19W0008: C-GKTA, a de Havilland DHC-8-300 aircraft operated by Jazz Aviation LP, was conducting flight JZA8408 from Kelowna (CYLW), BC to Calgary Intl (CYYC), AB with 3 crew members and 13 passengers on board. During cruise flight at FL230 approximately 115 nm south west of CYYC, the flight crew received a cabin pressure master warning light. The cabin altitude was at 12 500 feet and climbing; consequently, the flight crew initiated an emergency descent to 14 000 feet, and declared a PAN PAN. The QRH was executed, and the flight crew regained control of the cabin. Once the aircraft was clear of the mountains, the emergency was cancelled and the aircraft landed on Runway 35L without further incident. There were no injuries. The operator’s maintenance replaced the cabin pressure selector panel, and the cabin pressure controller in accordance with (IAW) the procedure. Functional pressurization check was performed IAW Aircraft Maintenance Manual (AMM) 21-30-00. A test flight was completed and no faults were found. The aircraft was returned to service.

October 6, 2019

Incident at 4522N / 06447W

A Government of Canada, Department of National Defence Lockheed C-130 (RSCU344) on a flight from Greenwood, NS (CYZX) to Goose Bay, NL (CYYR) requested descent due to pressurization problem. After resolving the issue the aircraft requested climb to FL230 at 1937Z and continued to its destination. No impact to operations.

August 29, 2019

Incident at 24NM HALIFAX / STANFIELD INTL NS (CYHZ)

An Irving Oil Transport Bombardier BD-100-1A10 (C-FALI/KCE2) on a flight from Halifax/Stanfield Intl, NS (CYHZ) to Saint John, NB (CYSJ) was cleared to and readback FL220. The aircraft climbed to FL230. No impact on operations.

May 13, 2019

Incident at 39NM CHARLO NB NDB (CL)

A Provincial Aerospace Beech B300 (C-FMUN/SPR1904) from Charlo Regional, NB (CYCL) to Halifax/Stanfield, NS (CYHZ) cleared to and read back FL210. The aircraft climbed to FL230. No Impact on operations.

December 12, 2018

Incident at 44NM BAGOTVILLE QC NDB (YBG) (Communication navigation surveillance/air traffic system)

Air traffic services (ATS) cleared a Chrono Aviation Beech 1900D (C-GXCA/NDL191) from Bagotville, QC (CYBG) to Nemiscau, QC (CYHH), headed northwest, to climb to FL240, behind a Kudlik Aviation Pilatus PC-12/47 (C-GODE/KUK707) from Quebec/Jean Lesage, QC (CYQB) to Kuujjuaq, QC (CYVP), which was established at FL230 and heading north, despite the insufficient lateral separation. The separation was re-established one minute after it had been lost.
Mise à jour: Rapport du BST no A18Q0197: C-GXCA, a Chrono Aviation Inc. Beech 1900D (NDL191), was cleared to climb to FL240 at departure from Bagotville (QC) north-westbound to Nemiscau, QC behind C-GODE, a Kudlik Aviation Inc. PC-12/47 (KUK707) which was level at FL230 and heading northbound from Quebec/Jean Lesage, QC (CYQB) to Kuujjuaq, QC (CYVP). A loss of separation occurred when the distance between the two aircraft was reduced to 3.5 miles at the same altitude, while the standard is 5 miles or 1 000 ft. The separation was re-established one minute after it had been lost.

November 28, 2018

Incident at 4530N / 07537W

A Lufthansa Boeing 747-400 (DABVM/DLH471) from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Frankfurt, Germany (EDDF) requested to return to CYYZ due to a technical issue, and requested to dump fuel. The aircraft dumped fuel starting at 0014Z, at FL310 on a heading of 265 degrees. The aircraft requested to descend during fuel dump. Fuel dump was completed at 0033Z at FL230. No emergency was declared. DLH471 landed at CYYZ at 0052Z without further incident.

September 26, 2018

Incident at MONTREAL CENTRE / ACC DE MONTRÉAL

Sharing of information on aircraft between an Embraer ERJ 170-200 LR operated by Republic Airlines (RPA3696), flying from Ottawa (CYOW), ON, to Newark (KEWR), NJ, climbing to FL220 and a De Havilland DHC-8-402 operated by Porter Airlines (POE467), flying from Toronto/Billy Bishop City (CYTZ), ON, levelling at FL230. RPA3696 received a traffic alert and collision avoidance system (TCAS) resolution advisory (RA) and descended 500 feet.

March 20, 2018

Incident at 3NM SW MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

At takeoff from Runway 24L, a KLM Royal Dutch Airlines Airbus A330-200 (KLM213) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Amsterdam, Netherlands (EHAM) was cleared for FL230, then initiated a left turn, violating standard instrument departure (SID) CYUL1. When the turn was noticed, KLM213 was instructed to maintain 5 000 ft since it was in conflict with an Air Transat Boeing 737-800 (TSC213) from Rio Hato, Panama (MPSM) to Montreal/Pierre Elliott Trudeau, QC (CYUL). Impact: TSC213 was guided for approximately 10 NM to avoid conflict.

February 17, 2018

Incident at 30NM MONTRÉAL INTL (MIRABEL) QC (CYMX)

After having been cleared to climb to FL220 and after having correctly read it back, an Air Canada Rouge Airbus A319-114 (C-FYJG/ROU1855) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Las Vegas, NV (KLAS) was seen climbing to FL230. No impact on operations.

June 21, 2018

Incident at TERRACE BC (CYXT)

UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Initial maintenance checks found no signs of any overheating or leaks around the engine or bleed air ducting fire wire routing. The right hand (R/H) engine fire loop was checked against the maintenance manual resistance limits and was found well out of limits. That along with no signs of overheating or bleed air leaks strongly point to a false fire warning. Fire loop was replaced.
TSB #A18P0084: C-FTJC, a Cessna 560 Encore aircraft operated by Carson Air, was conducting a flight from Terrace, BC (CYXT) to Vancouver Intl, BC (CYVR). While climbing thru 17 000 feet, the flight crew turned on the engine and wing anti-ice systems. Shortly thereafter, the flight crew observed a right engine fire warning light. The flight crew leveled the aircraft at FL230 and completed the engine fire light checklist. After reducing power on the right engine as per the checklist, the engine fire light extinguished. The flight crew completed the checklist and advised ATC that they would continue the flight to CYVR with reduced power on the right engine. A PAN PAN was declared, and the aircraft landed at CYVR without further incident.

April 4, 2018

Incident at 5028N / 11537W

A WestJet Encore de Havilland DHC-8-402 (WEN3116) from Kamloops, BC (CYKA) inbound to Calgary, AB (CYYC) was at FL230 and cleared to A120. A WestJet Boeing 737-700 (WJA128) from Vancouver, BC (CYVR) to Calgary, AB (CYYC) also inbound to Calgary on the same track was cleared from FL330 to FL240. WJA128 received a traffic alert and collision avoidance system (TCAS) Resolution Advisory and levelled off at FL250. Traffic was passed between aircraft. No impact to operations.

October 4, 2018

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

An American, corporately registered Raytheon Hawker 800XP (N171TR) from Toronto/Pearson International, ON (CYYZ) to Teterboro, NJ (KTEB) departed Runway 24R on the KEPTA2 standard instrument departure (SID) and was instructed to climb to FL230. N171TR was observed turning southeast without authorization and was instructed to fly heading 180.

July 13, 2018

Incident at 15NM AYLMER ON (YQO) VOR/DME (Communication navigation surveillance/air traffic system)

A Flightpath Charter Airways Inc. Embraer EMB 500 (KANT103) from Coleman A. Young International, MI (KDET) to Barrie-Orillia/Lake Simcoe, ON (CYLS) was Northbound at FL210 when the aircraft was instructed to climb to FL230 without prior coordination.

July 22, 2018

Incident at PEMBA

A Mesa Airlines Embraer EMB-170 (ASH6109) from Toronto/Lester B. Pearson Int'l, ON (CYYZ) to Houston Int'l, TX (KIAH) was unaware of the PEMBA FL240 crossing restriction. ASH6109 crossed PEMBA at approximately FL230. The controller turned ASH6109 right 15 degrees for traffic. No other operational issues.

June 20, 2018

Incident at RAKAM intersection

A corporately registered Cessna 525 (N85VR) from Watertown, NY (KART) to West Michigan, MI (KBIV) checked in climbing to FL330. The flight plan had been filed at FL240 and Concordia advised they had cleared N85VR to FL230 which was read back. The controller cleared N85VR to maintain FL230. No operational impact.

April 30, 2018

Incident at OMAPA intersection

While checking in with Grimsby, an American corporately registered Raytheon Aircraft Company Hawker 800XP (N159FM) from Toronto/Lester B. Pearson Int'l, ON (CYYZ) to Teterboro, NJ (KTEB) stated that it was climbing through 16,000 feet for FL250. N159FM had previously been cleared to maintain FL230 and a speed of 250 knots, which had been read back correctly, by the departure controller. The Grimsby controller re-cleared N159FM to maintain FL230. No operational impact.

Incident at OMAPA intersection

When checking in with the controller, an American corporately registered Raytheon Hawker 800XP (N159FM) from Toronto/Lester B. Pearson Int'l, ON (CYYZ) to Teterboro, NJ (KTEB) stated that they were climbing through 16000 feet for FL250. The aircraft had previously been cleared to maintain FL230 and a speed of 250 knots, by the departure controller, which had been read back correctly. Grimsby re-cleared the aircraft to maintain FL230. No conflict or operational impact.

March 28, 2018

Incident at 4252N / 07951W (Communication navigation surveillance/air traffic system)

A WestJet Boeing 737-800 (WJA2604) from Toronto/Lester B. Pearson, ON (CYYZ) to Belize City, Belize (MZBZ) and a WestJet Boeing 737-700 (WJA2518) from Toronto/Lester B. Pearson, ON (CYYZ) to Providenciales, Turks and Caicos (MBPV) were both given clearance above FL230 by next sector without authorization. No impact to operations.

March 19, 2018

Incident at 16NM TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

An American corporately registered Gulfstream Israel Gulfstream 200 (N212U) on a flight from Toronto/Lester B. Pearson Int'l, ON (CYYZ) to Teterboro, NJ (KTEB) checked in with the controller cleared to FL250. The previous controller had cleared the aircraft to FL230 which was read back. There was no conflict as N212U was only climbing through 12 000 feet. The controller re-cleared N212U to maintain FL230.

February 28, 2018

Incident at 4447N / 07610W

A Porter Airlines de Havilland DHC-8-402 (C-GLQC/POE232) on a flight from Ottawa/MacDonald-Cartier Int'l, ON (CYOW) to Toronto/Billy Bishop, ON (CYTZ) was authorized and correctly readback a climb to FL220. The aircraft was however observed climbing to FL230. No impact to operations.

February 17, 2018

Incident at ARVIE intersection

During its descent to Montreal/Pierre Elliott Trudeau Int'l, QC (CYUL), a WestJet Encore de Havilland DHC-8-402 (WEN8989) on a flight from Toronto/Lester B. Pearson Int'l, ON (CYYZ) to Montreal/Pierre Elliott Trudeau Int'l, QC (CYUL) informed the controller that it had lost vertical navigation (VNAV) between EPMOK and ARVIE, between FL230 and FL200, but that area navigation (RNAV) was not affected. No impact.

January 26, 2018

Incident at 30NM OTTAWA / MACDONALD-CARTIER INTL ON (CYOW)

A 6776281 Canada Inc. Canadair F 86 E (C-GSBR) on a flight from Ottawa/Gatineau, QC (CYND) to Akron, OH (KCAK) at FL280 advised air traffic control (ATC) that they were conducting an emergency descent at 7000 feet/minute due to an oxygenation problem. The controller acted quickly and gave turn instructions to a Porter Airlines de Havilland DHC-8-402 (C-GKQC/POE471) on a flight from Toronto/Billy Bishop, ON (CYTZ) to Montreal/Pierre Elliott Trudeau, QC (CYUL) at FL230, whose path was converging with C-GSBR. The minimum required separation of 5 miles could not be assured and was reduced to 3.6 miles due to the controller's quick reaction. C-GSBR returned to CYND and landed safely at 1900Z.
UPDATE TSB Report #A18O0021: C-GSBR , a Vintage Wings of Canada F86E Saber, was enroute at FL280 from Gatineau-Ottawa Executive Airport, ON (CYND) to Akron-Canton Regional Airport, OH (KCAK). While completing the cruise checklist the pilot noted that there was no oxygen flow being supplied to the pilot's mask. ATC was advised and an emergency descent begun. C-GKQC, a Porter Airlines DHC-8-400, operating as flight POE471 from Toronto City Center, ON (CYTZ) to Montreal Trudeau, QC (CYUL) was at FL230 and converging with the F86. The air traffic controller issued vectors to POE471 to avoid the descending F86. The two aircraft came within 3.6NM horizontally at FL230 where 5.0 NM of separation was required. Post - It was determined that the oxygen hose to the pilot's mask had been incorrectly attached. The F86 was pressurized to approximately 5.5 PSIG giving a cabin altitude of approximately 13 500'. The operator has since revised the preflight checklist to include an oxygen flow check.

January 23, 2018

Incident at 21NM TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

An Air Canada Embraer ERJ 190-100 IGW (ACA608) from Toronto/ Lester B. Pearson, ON (CYYZ) to Halifax, NS (CYHZ) was cleared to FL230 and readback the clearance controller. ACA608 contacted the next controller and reported climbing to FL280 without authorization. No operational impact.

Incident at 68NM TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

An Air Canada Airbus A321-211 (ACA104) from Vancouver, BC (CYVR) to Toronto/ Lester B. Pearson, ON (CYYZ) responded to a traffic alert and collision avoidance system (TCAS) resolution advisory (RA) while descending to FL230. Traffic, a SkyNorth Air Mitsubishi MU 2 (SN694) from Toronto/ Buttonville, ON (CYKZ) to Winnipeg, MB (CYWG) was climbing opposite direction to FL220. Traffic had been passed to both aircraft prior to the RA. No operational impact.

January 4, 2018

Incident at 45NM TIMMINS / VICTOR M. POWER ON (CYTS)

A Jazz Aviation de Havilland DHC-8-402 (JZA8288) on a flight from Timmins/Victor M. Power, ON (CYTS) to Toronto/Lester B. Pearson, ON (CYYZ) was observed climbing above FL230 and instructed to maintain FL230. No operational impact and no other aircraft in the vicinity.

January 3, 2018

Incident at OLIGO intersection

A Sunwing Airlines Boeing 737-800 (SWG9382) on a flight from Ottawa/MacDonald-Cartier, ON (CYOW) to North Bay, ON (CYYB) checked in climbing through FL230. The aircraft stated that they were cleared to FL330 after being queried by the controller. The flight was recleared to FL280. No conflicts or operational impact.
UPDATE TO AIRCRAFT INFORMATION: Aircraft information changed from a "Sunwing Airlines Boeing 737-800 (SWG9382)" to a "TUI Airlines Belgium Boeing 737-8K5 (wet lease with Sunwing)".

November 2, 2018

Incident at Erie (KERI)

TSB #A18F0261: C-GBHO, an Airbus 319-100 aircraft operated by Air Canada Rouge, was conducting flight ROU1735 from Liberia/Daniel Oduber Quirós Intl (MRLB), Costa Rica to Toronto/Lester B. Pearson Intl (CYYZ), ON. During cruise flight, the flight crew received reports of significant turbulence in the vicinity of Pittsburgh Intl (KPIT), PA. As a result, the cabin was secured early, all passengers and crew were instructed to remain seated with seatbelts fastened, and an early descent to FL230 was initiated due to ride reports which indicated more favourable conditions at that altitude. In the vicinity of Erie Intl/Tom Ridge Field (KERI), PA, the flight encountered significant turbulence which caused an abrupt change in altitude and airspeed, with the aircraft climbing to FL235. ATC was notified, and a lower altitude was requested and granted. Upon reaching FL180, flight conditions were smooth and the flight was subsequently completed uneventfully. No persons were injured, nor was any damage caused to the aircraft as a result of the turbulence encounter. The operator’s maintenance inspected the aircraft and found no faults. The aircraft was returned to service.

October 3, 2018

Incident at 50 NM S Norwich (EGSH)

TSB #A18F0230: C-FFPH, a Boeing 737-800 aircraft operated by TUI Airways as flight TOM5382, departed Norwich Intl. Airport, UK (EGSH) for Rhodos/Diagoras/Maritsa, GR (LGRP). During the climb, London ATC cleared TOM5382 to FL220 and advised of converging traffic leveling at FL230. The flight crew reduced the climb to less than 900 ft/min and at FL217 a TCAS Traffic Advisory was received. Almost immediately a TCAS Resolution Advisory "Descent, Descent" was received. The autopilot was disconnected and corrective action was taken to move the aircraft out of the red descent displayed on the PFD and ATC was advised. After having descended 300 feet a new TCAS RA was received to "Level off, Level off". A clear of conflict was received and then FL220 was resumed by the aircraft. The aircraft continued to LGRP uneventfully.

April 23, 2018

Incident at 4319N / 07849W (ELT)

One aircraft level at FL230 reported hearing an emergency locator transmitter (ELT) signal. No other reports received. Trenton Joint Rescue Coordination Centre (JRCC) notified.

March 5, 2018

Incident at 117NM NW DULUTH, MN (KDLH)

A Jazz Bombardier CL-600-2D24 (JZA8525) on a flight from International Falls, MN (KINL) to Winnipeg/James Armstrong Richardson Int'l, MB (CYWG) was cleared to FL220 by Minneapolis, MN (MSP) and read back FL220. The pilot contacted Winnipeg Center climbing to FL230. No other aircraft affected.

December 7, 2018

Incident at 7135N / 08622W

The Edmonton Area Control Centre (ACC) was advised, via relay from another aircraft, that a Private Air Beech B200C (C-GMNM/FSY134) from Arctic Bay, NU (CYAB) to Rankin Inlet, NU (CYRT) had reported a level of FL260. No clearance had been issued. The base of controlled airspace in that area is FL230.

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