A Pacific Professional Flight Centre Cessna 152 (C-GVVG) from Vancouver/Boundary Bay, BC (CZBB) to Vancouver/Boundary Bay, BC (CZBB) declared an emergency on short final due to a vacuum pump failure. C-GVVG landed safely. Two VFR general aviation (GA) aircraft were pulled up in order to accommodate C-GVVG. The Aircraft Rescue and Fire Fighting (ARFF) unit responded.

TSB Report #A22C0006: C-FDOD, a Bell Helicopter Textron 412 operated by Wisk Air Helicopters, was returning from a work site on a power line to the work camp at Kingfisher Lake, ON, with the pilot and 6 passengers on board. While enroute, the No. 1 "FUEL LOW" (quantity) caution annunciator illuminated. The pilot commenced a precautionary landing and planned for a possible single engine landing. During the descent, at approximately 200 feet above ground level, the No. 1 engine (Pratt and Whitney Canada PT6T-3B) lost power, accompanied by illumination of the associated caution/warning annunciators. While on short final, the No. 2 engine began to fluctuate and then lost power. A successful auto-rotative landing was conducted onto the frozen, snow covered surface of Kingfisher Lake with both engines inoperative. There were no injuries and the helicopter was undamaged. The helicopter was refueled the next day and flown to the Kingfisher Lake camp. After further inspection, the helicopter was ferried to the operators maintenance base under a flight permit. The operators maintenance personnel subsequently discovered several discrepancies. Loose B nuts in the No.1 fuel tank prevented the ejector pump from transferring fuel aft, over the baffle, to the boost pump side of the fuel tank. The examination also determined that the No. 2 engine was starved for fuel due to leaking flapper valve plates that, in a normal flight attitude, allowed fuel to move forward, through the baffle, at a rate that exceeded the recapture capacity of the ejector pump. The effect of these discrepancies was to trap unusable fuel forward of the baffle in each fuel tank. Further discrepancies were noted such as a damaged No. 2 low level float switch and inaccurate fuel quantity indication systems. The operator is conducting checks on the remaining aircraft in the fleet.

A Wasaya Airways de Havilland DHC-8-102 (C-GOKN/WSG8161) from Opapimiskan Lake, ON (CKM8) to Thunder Bay, ON (CYQT) advised the area control centre (ACC) controller that they were experiencing a hydraulic pump issue with their number 2 engine. No assistance required, no impact on operations.

The buildings fire alarm was activated by a fire pump failure in the Technology Operations Coordinator (TOC) area. No fire as advised by the Service Delivery Manager (SDM). All 4 Flight Information Centre (FIC) briefers were sent to the parking lot until they were cleared to re-enter the building. Radio (3) and Supervisor (1) stayed in place and answered radio and phone calls. Impact to FIC operations unknown. Alarm lasted approximately 25 minutes.

A Perimeter Aviation de Havilland DHC-8-102 (C-GWPS/PAG401) from Thompson, MB (CYTH) to Oxford House, MB (CYOH) returned to the field 5 minutes after departure due to an indication. No assistance requested. No impact on operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. C-GWPS had an air turn back to Thompson, MB (CYTH) due to a #1 Engine Hydraulic Pump caution light illuminating. The #1 Engine-Driven Pump (EDP) was replaced, the case drain filter was inspected and the aircraft was returned to service.

Cargojet advised air traffic service (ATS) that a Cargojet Airways Boeing 757-28A (C-GIAJ/CJT1951) from Covington/Cincinnati, KY (KCVG) to Montréal/Mirabel, QC (CYMX) declared an emergency because of a mechanical problem. Emergency services were requested. The aircraft landed at 2238Z. The runway was closed from 2238Z to 2314Z for inspection of the runway and to clean up the leak on the runway. No operational impact.
UPDATE: TSB Report #A21Q0124: C-GIAJ, a Cargojet Airways Ltd. Boeing 757 operating as flight CJT1951 was on an international instrument flight rules flight from Cincinnati, KY (KCVG) to Mirabel, QC (CYMX). During takeoff, the crew observed a low fluid quantity in left hydraulic system (L HYD QTY) indication, followed by a low-pressure message for the same system (L HYD SYS PRESS). After completing the Quick Reference Handbook (QRH) procedure and contacting maintenance, a decision to continue to destination was made. On approach for Runway 24 at CYMX, during landing gear down selection, an indication for an unsecured nose wheel appeared. At 300 ft AGL, the green light indicating that the nose gear was completely extended appeared and the aircraft landed without incident. In the post-flight inspection, the nose gear retraction actuators flexible hose was found to be damaged and was replaced. The left side systems electric and motor hydraulic pumps were also replaced.

At Ottawa/Gatineau, QC (CYND), a concrete pump was observed at the airport (height between 50 ft and 75 ft) at 1600Z. Airport management was advised by the air traffic service (ATS) unit that a NOTAM was required. No impact on operations.

The Sûreté du Québec (SQ) and the Joint Rescue Coordination Centre (JRCC) Trenton reported that a Plastiques G.P.R. Inc. Bell 206B (C-FOXA) conducted a forced landing, which set off its emergency locator transmitter (ELT) in Rang Saint-Albert, between Sainte-Mélanie and Saint-Jean-de-Matha. The Transportation Safety Board of Canada (BST) and the Aviation Operations Centre (AOC) were advised.
UPDATE: TSB Report #A21Q0099: C-FOXA, a privately operated Bell 206B, was on a local visual flight rules flight from a residence in Sainte-Mélanie, QC, with a pilot and 4 passengers on board. Once back at the departure point, the booster pump low fuel pressure warning light lit up briefly. The pilot chose to perform a precautionary landing in a field and, while on final approach, the engine (Allison 250-C20) died. The pilot autorotated and, during landing, the tail boom was severed by the main rotor. The helicopter remained on the spot on its skids and there were no injuries. The emergency locator transmitter (ELT) sounded and was immediately shut off. The post-flight inspection determined that there was no fuel remaining on board.

A Cargair Ltd. Cargair Cessna 172N (C-GYMA) from Montréal/St-Hubert, QC (CYHU) to Montréal/St-Hubert, QC (CYHU) declared an emergency due to a mechanical issue and requested to return to land. Emergency services were called. The aircraft landed without incident at 1549Z. Emergency services were cancelled and the aircraft was towed away. The runway was inspected and then reopened at 1602Z. Impact: 3 VFR departures were moved to Runway 24R. No other impact on operations.
UPDATE: TSB Report #A21Q0088: C-GYMA, a Cargair Ltd. Cessna 172N, was on a local visual flight rules training flight from Montreal/Saint-Hubert, QC (CYHU) with one instructor and one student pilot on board. While the aircraft was in flight, the instructor noticed that it was not possible to reduce power below 2000 engine revolutions. An emergency was declared and the instructor directed the aircraft to Runway 24L on final and cut the engine before touching down. The aircraft landed without incident at CYHU. The carburetor was replaced by maintenance. The carburetors accelerator pump was found to be defective by a specialized shop.

Shortly after departure, an Airmedic Inc. Pilatus PC-12/47E (C-GMXD) from Val-dOr, QC (CYVO) to Eastmain River, QC (CZEM) advised that it was returning to land at CYVO due to an indication problem (i.e. fuel pump issue). No emergency declared or assistance requested. While inbound, C-GMXD advised of a "return to normal" and asked to proceed towards CZEM. Moments later, C-GXMD requested to be rerouted to CYVO again. The aircraft landed safely at 1211Z. No impact on operations. (Duplicate AOR 271590-V1 / CADORS 2021Q0445 deleted after information merge)

TSB Report #A21P0115: C-FEBE, a Viking DHC-2 Beaver float plane operated by Harbour Air Ltd., was on a VFR flight from Nanaimo Harbour, BC (CAC8) to Sechelt/Porpoise Bay, BC (CAX3) with the pilot and 3 passengers on board. Shortly after takeoff, at about 300 feet above sea level, the fuel pressure warning light illuminated. The pilot completed the cause checks, and switched fuel tanks as a precaution, but the fuel pressure indication remained at 0 psi. The aeroplane’s engine (PRATT & WHITNEY-USA, R-985) failed shortly thereafter. The pilot performed a forced landing straight ahead on the water and radioed for the company to prepare the Assist Boat. The pilot was able to restart the engine using the manual fuel pump and then taxied back to the dock unassisted. A company maintenance inspection determined that the engine-driven fuel pump drive shaft had sheared. They filed a Service Difficulty Report (SDR) with Transport Canada. The fuel pump was replaced and the aircraft was returned to service.

TSB Report #A21P0083: C-GLYO, an Airspan Helicopters Limited Bell 212HP, was conducting water bucketing operations 45 nautical miles east-northeast of Williams Lake, BC (CYWL) with 1 pilot on board. During initial approach to a water source, the pilot felt stiffness in the tail rotor pedals and aborted the approach to diagnose the problem. Shortly thereafter, the pilot felt stiffness in the cyclic and collective controls, which was followed by an audible bang and a squealing noise. The helicopter hydraulic caution light illuminated on the caution panel and the pilot confirmed the #1 hydraulic pressure gauge was indicating below normal operating pressure. The pilot communicated the hydraulic problem to a Bell 206 helicopter pilot operating in the vicinity and then selected the #1 hydraulic system switch to the OFF position. The stiffness felt in the cyclic and collective controls subsided, while the tail rotor pedals remained stiff for the remainder of the flight. The Bell 206 pilot transmitted a MAYDAY message to the fire centre and assisted the Bell 212 pilot in finding a suitable landing location. The Bell 212 pilot performed a successful precautionary landing in a farmers field and the MAYDAY was cancelled. There were no reported injuries and no damage to the aircraft. Maintenance discovered a ruptured hydraulic pressure line immediately downstream of the #1 hydraulic pump. Additional investigation revealed metallic debris in the pressure and return ports of the #1 hydraulic integrated valve assembly.

Shortly after departure, a Southern Interior Flight Centre Ltd. Beech 76 (C-GSFB) from Kelowna, BC (CYLW) to Kelowna, BC (CYLW) requested to return to land due to landing gear that would not fully retract. The landing gear was "down and locked", so assistance was not required. The aircraft landed without incident, no impact on operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Following departure from Kelowna, BC (CYLW), a Southern Interior Flight Centre Ltd. Beech 76 (C-GSFB) was unable retract the landing gear. Following selection of the landing gear to the up position, the crew observed the “in transit” light, however, the 3 green landing gear indication lights remained on and the hydraulic power pack did not operate. The flight crew then selected the gear to the down position and observed the “in transit” light extinguish and the 3 green landing gear indication lights remained on. The crew verified that the landing gear was down and locked and returned to the airport and landed safely. The maintenance investigation found a broken electrical wire connection at the hydraulic pump pressure switch. The connection was repaired, satisfactory gear swings were carried and the aircraft was returned to service.

At 1744Z, a Central Mountain Air Ltd. Beech 1900D (C-GFSV/GLR705) from Prince George, BC (CYXS) to Terrace, BC (CYXT) advised it was conducting a missed approach due to a landing gear issue.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. At 1744Z, a Central Mountain Air Ltd. Beech 1900D (C-GFSV/GLR705) from Prince George, BC (CYXS) to Terrace, BC (CYXT) advised it was conducting a missed approach due to a landing gear issue. The aircraft detoured into Smithers, BC (CYYD) due to poor weather conditions and the emergency response planning (ERP) activated. The landing gear were pumped down upon arrival into Smithers as the circuit breaker (CB) for the electrical gear relay was popped. Troubleshooting on the ground found a failed landing gear selector relay. Relay was replaced and system ground checked serviceable.

A WestJet Boeing 737-8CT (C-GWSZ/WJA705) from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Vancouver Intl, BC (CYVR) was instructed to conduct a missed approach Runway 08R due to traffic, a Toyo Pumps North America Corp. Compagnie Daher TBM 700 (C-GPUT) from Salt Lake City, UT (KSLC) to Vancouver Intl, BC (CYVR) vacating the runway slowly. No operational impact. Audio reviewed.

At 0145Z, an Air Spray (1967) Ltd. Aero Commander 695A (ASB062) from Prince George, BC (CYXS) to Prince George, BC (CYXS) declared an emergency and requested emergency services on standby after reporting an issue with its landing gear hydraulics. Before landing, ASB062 confirmed that its landing gear indicator showed that the problem was resolved and reported visual confirmation that the landing gear was functioning normally. Emergency vehicles were standing by and ASB062 landed without any further issues. No operational impact.
UPDATE: TSB Report #A21P0082: C-GIPL, an Air Spray 1967 Limited Gulfstream Commander (Twin Commander) 695B, operating as flight ASB062, was conducting fire suppression operations from Prince George, BC (CYXS) with 2 crew members on board. During the operation southwest of CYXS, the crew became aware of a possible hydraulic failure. Within a short time, the hydraulic failure was confirmed with reference to the hydraulic pressure gauge. The crew completed the hydraulic failure checklist and decided to return to CYXS. As the aircraft approached CYXS, the crew completed the landing gear emergency extension checklist and declared an emergency with the CYXS tower. The aircraft landed safely with ARFF on standby. There were no injuries. A maintenance inspection determined that the auxiliary hydraulic pressure switch had a leak, which caused a loss of hydraulic pressure. This pressure loss resulted in damage to the engine driven hydraulic pump due to lack of lubrication. The switch and pump were replaced and the aircraft was returned to service.

A privately registered Mooney M20E on a controlled VFR flight from Port Alberni, BC (CBS8) to Calgary/Springbank, AB (CYBW) declared "Mayday" due to a failed fuel pump and power loss with the Vancouver (VR) area control centre (ACC) when approximately 25NM northeast (NE) of Kelowna, BC (CYLW). The aircraft was cleared to CYLW and landed safely at 1715Z. A WestJet Encore Ltd. de Havilland DHC-8-402 (WEN3181) from Edmonton, AB (CYEG) to Kelowna, BC (CYLW) experienced a minor delay. (Duplicate AOR-276483-V1 deleted after information merge)
UPDATE: TSB Report #A21P0080: A privately registered Mooney M20E was conducting a controlled VFR flight from Port Alberni/Alberni Valley Regional, BC (CBS8) to Calgary/Springbank, AB (CYBW), with only the pilot on board. While in cruise flight at 13 000 feet above sea level and approximately 17 nautical miles NE of Kelowna, BC (CYLW), the aircraft had a significant loss of engine power (AVCO LYCOMING, IO-360-A1A) and began to descend. The pilot declared a MAYDAY with air traffic control (ATC) and diverted to CYLW. Due to limited visibility from haze and smoke from nearby forest fires, ATC provided assistance in directing the flight to the CYLW. During the diversion, engine power was restored after the pilot switched the fuel source from the left tank to the right tank. The flight landed without further incident. A maintenance inspection found and removed a nesting insect from the left fuel tank vent. The aircraft subsequently departed CYLW and returned to CYBW without further incident.

A privately registered, amateur built Bede BD5B from Abbotsford, BC (CYXX) to Abbotsford, BC (CYXX) conducted a high speed low pass on Runway 19 and then reported an issue that required immediate landing. The aircraft was cleared to land on any runway, indicated a preference for Runway 25 and were cleared to land on that runway. The aircraft subsequently reported that the issue was being resolved and selected Runway 19, and were then cleared to land on that runway. The aircraft landed on Runway 19 safely. The Aircraft Rescue and Fire Fighting (ARFF) unit was called via the red ARFF call button and were standing by for the landing aircraft. No operational impact. The pilot of the aircraft reported that they believed the issue was a faulty fuel pump.

TSB Report #A21P0049: C-GOLC, a de Havilland DHC-2 aircraft operated by Harbour Air, was being fuelled at the dock at Vancouver International Seaplane Base, BC (CAM9). The person refuelling the piston engine aircraft (Pratt & Whitney-USA R-985 Serial Number 4220855) used the Jet A nozzle instead of the AvGas nozzle. The fuel nozzle had been turned on but the fuel pump for the Jet A had not been turned on. An unknown amount of Jet A was added to the fuel tank. The fuel tank was drained by company maintenance and the aircraft was returned to service.

An amphibious, privately registered Found Brothers FBA-2C2 from Vancouver/Boundary Bay, BC (CZBB) to Vancouver/Boundary Bay, BC (CZBB) reported a gear collapse upon landing. The aircraft was able to remain in the landing area. Runway 13 was closed for 2.5 hours for aircraft removal. Some training flights were cancelled due to the use of a less desirable runway during the closure.
UPDATE: TSB Report #A21P0067: A privately registered Found Brothers FBA-2C2, on amphibious floats, was on a VFR flight from Sparwood/Elk Valley, BC (CYSW) to Boundary Bay, BC (CZBB) with one pilot onboard. During the flight, the aircraft experienced a "gear pump" caution light and was unable to lower the landing gear. The pilot landed with the gear up at CZBB and the aircraft came to a stop on Runway 13. The pilot was not injured and there was no fire. Aircraft maintenance crews were unable to locate a failure in the float landing gear and discussions are continuing with the float manufacturer.

An Air Spray (1967) Ltd. Aero Commander 690 (ASB062) from Prince George, BC (CYXS) to Prince George, BC (CYXS) reported a hydraulics failure and was unable to deploy its landing gear. The pilot declared an emergency. The 911 fire unit was dispatched and the Aircraft Rescue and Fire Fighting (ARFF) unit was notified and standing by. The pilot later reported 3 green lights and a visual confirmation of the landing gear deployment. The aircraft landed safely on Runway 33. No operational impact.
UPDATE: TSB Report #A21P0063: C-GIPL, an Airspray 1967 Ltd. Aero Commander 695B, was operating as ASB062 from Prince George, BC (CYXS) with 2 crew members on board, conducting fire suppression south of CYXS. During the operation, the crew became aware of a possible hydraulic failure. Within a short time, the hydraulic failure was confirmed through the hydraulic pressure gauge. The crew completed the hydraulic failure checklist and decided to return to CYXS. As the aircraft approached CYXS, the crew reviewed the flapless landing and emergency braking procedures. The crew then completed the landing gear emergency extension checklist and declared a "PAN PAN" with the CYXS tower. The aircraft landed safely, without further incident, with the ARFF unit on standby. There was no fire and no injuries. Upon inspection, the maintenance staff found the auxiliary hydraulic pump pressure switch leaking, causing a loss of hydraulic pressure. The switch was replaced and the system tested successfully. The aircraft was returned to service.

A Tasman Helicopters Ltd. Bell 212 (C-FVTS) from Vancouver/Boundary Bay, BC (CZBB) to Manning, AB (CFX4) entered the Williams Lake, BC (CYWL) control zone (CZ) without making contact with the CYWL flight service station (FSS) and landed at the fuel pumps. The FSS was able to establish contact with the pilot on 126.7 MHz once the aircraft was visually confirmed at the pumps.

A Carson Air Ltd. Beech B300 (C-GRUU/CRN911) from Cranbrook/Canadian Rockies, BC (CYXC) to Kelowna, BC (CYLW) reported a landing gear indication and requested emergency vehicles on standby. After the aircraft landed safely, a runway inspection was completed. No impact on operations.
UPDATE: This record replaces CADORS 2021A0285, which was deleted due to incorrect region.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On approach into CYLW, the aircraft (C-GRUU) was unable to extend the landing gear normally. Alternate procedures were followed, the landing gear was pumped down by hand, and the landing occurred without incident. Maintenance found that the electric motor that drives the hydraulic power pack had failed. The entire power pack was replaced, landing gear functions were carried out, and the aircraft was returned to service. A Service Difficulty Report (SDR) was raised, and since there is no inspection/replacement schedule provided by the manufacturer, the aircraft inspection schedule has been amended to include a detailed inspection of the landing gear power pack motor at 400 hours of operation, and a replacement at 5000 hours of operation.

A JimJet Resources Inc. Cessna 414A (C-FZAM) from Abbotsford, BC (CYXX) to Calgary/Springbank, AB (CYBW) declared an emergency due to mechanical trouble. C-FZAM shut down one engine and landed at Kelowna, BC (CYLW) without incident.
UPDATE: TSB Report #A21P0037: C-FZAM, a privately operated Cessna 414A, was conducting a flight from Abbotsford, BC (CYXX) to Calgary/Springbank, AB (CYBW) with 1 pilot on board. While in cruise at 21 000 feet ASL, approximately 30NM East of Kelowna, BC (CYLW), the pilot observed a slight drop in fuel flow to the right engine, a Teledyne Continental Motors TSIO-520-NB (S/N: 504315). A short time later, the fuel flow dropped rapidly, followed by reduced engine power. The pilot completed the emergency checklist for a suspected engine driven fuel pump failure, which calls for the Auxiliary Pump set to high, and this restored fuel flow and engine power to normal. The pilot elected to divert to CYLW and conduct a precautionary landing. During the descent into CYLW, the aircraft experienced significant vibrations, with the right-hand engine power fluctuating. The pilot declared a "MAYDAY", shut down the right engine, and proceeded with a single engine approach and landing. The aircraft landed without further incident. There were no injuries. Subsequent maintenance actions revealed the right-hand engine driven fuel pump had experienced partially seized internals but the shaft was still intact, which allowed the pump to cavitate and/or continue pumping fuel, creating power fluctuations. The fuel pump was replaced and the aircraft was returned to service.

A Cargojet Airways Ltd. Boeing 757-223 (C-FGKJ/CJT925) from Vancouver, BC (CYVR) to Covington/Cincinnati, KY (KCVG) rejected its take-off from Runway 26L. CJT925 exited the runway at Taxiway E and requested the Aircraft Rescue and Fire Fighting (ARFF) unit for a brake inspection. CJT925 returned to parking with no further issue at 0223Z.
UPDATE: TSB Report #A21P0021: C-FGKJ, a Cargojet Canada Ltd. Boeing 757, was operating as flight CJT925, from Vancouver, BC (CYVR) to Cincinnati/Northern Kentucky, KY (KCVG) with 2 crew onboard. During the take-off roll from Runway 26L, at approximately 80 knots, the flight crew observed an EICAS message of "R HYD ENG PUMP" with an associated "PRESS" illuminated switch light. The flight crew rejected the take-off, exited the runway at Taxiway E, and requested ARFF services for a brake inspection. The crew taxied to the gate and parked without further incident. Maintenance performed an inspection and engine run with systems test, then deferred the defect under 29-31-02-02 "Center and Right Pump Indication Systems Inoperative". The aircraft was returned to service.

A Carson Air Ltd. Beech 1900D (C-FBTR/CRN511) from Prince George, BC (CYXS) to Kelowna, BC (CYLW) declared a landing gear malfunction and requested that the Aircraft Rescue and Fire Fighting (ARFF) unit be on standby. CRN511 landed safely. No impact to operations.
UPDATE: TSB Report #A21P0006: C-FBTR, a Carson Air Beech 1900D aircraft, was operating flight CRN511 from Fort St. John, BC (CYXJ) to Kelowna, BC (CYLW) with 2 crew members and 3 passengers on board. During approach, the landing gear did not extend. The flight crew decided to hold, actioned the appropriate checklists, and requested emergency services to be on standby as a precaution. The landing gear was manually extended and the aircraft landed without further incident. There were no reported injuries and no damage to the aircraft. In the process of troubleshooting the landing gear system, maintenance personnel found a broken wire going to the landing gear control circuit breaker. The wire was repaired and the landing gear system tested as serviceable.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On approach into Kelowna, BC (CYLW), a Carson Air Beech 1900D (C-FBTR) experienced a landing gear malfunction. The crew went around to troubleshoot and used the back-up system to pump the gear down. The aircraft landed and taxied without incident. Maintenance investigated and replaced the landing gear selector. Numerous gear swings on jacks revealed the fault once again. A broken wire was eventually discovered in the sub panel behind the landing gear selector. The wire was repaired, and further gear swings on jacks and a test flight proved the repair to be successful, and the aircraft was released into service.

Aviation Incident Report #17068: At Wingham/Richard W. LeVan, ON (CPR7), it was reported that the fuel pumps were shut off without an update to the Canada Flight Supplement (CFS) and NOTAMs concerning model jets were not issued. Additionally, lighting and the global positioning system (GPS) approach require maintenance.

TSB Report #A21C0077: C-FTXK, a Canadair CL-215 operated by Gouvernement du Québec (Service aérien gouvernemental), was conducting a flight from Dryden, ON (CYHD) to The Pas, MB (CYQD). When applying power for takeoff, the right engine (Pratt and Whitney-USA R2800 CA3) shutdown, the propeller feathered, and the takeoff was discontinued. The operators maintenance found that the accelerating pump on the carburetor was at fault. The unit was replaced and the aircraft was returned to service.

A Thunder Airlines Mitsubishi MU-2B-60 (C-GZNS/THU870) from Moosonee, ON (CYMO) to Timmins/Victor M. Power, ON (CYTS) advised of an issue with its nose gear light on final approach. The aircraft conducted a low approach and the flight service station (FSS) advised the aircraft that the landing gear appeared to be down. The pilot of THU870 advised that they would hand-pump the nose gear to make sure it was lowered. The flight landed on Runway 21 at 0127Z without issue. The pilot suggested they might need to get a new bulb to correct the issue.

A KBM Forestry Consultants Inc. Piper PA-34-200T (C-GDPY) on a flight from Thunder Bay, ON (CYQT) reported a fuel shortage and advised it was making an off-airport forced landing. The emergency locator transmitter (ELT) signal was reported by aircraft in the vicinity. Joint Rescue Coordination Centre (JRCC) Trenton notified.
UPDATE: TSB Report #A21C0051: C-GDPY, a Piper PA-34-200T aircraft operated by KBM Forestry Consultants Inc., was conducting a photo survey of an area approximately 50 miles north of Sioux Lookout, ON (CYXL), with only the pilot onboard. While conducting the survey, the pilot noticed the main fuel cells were low on fuel and selected the auxiliary fuel pumps on. Shortly after, the left engine began to sputter and then lost power. The pilot then selected cross-feed and was able to restart the engine. The pilot decided to conduct a precautionary landing on a logging road approximately 24 miles north of CYXL. After touchdown, the aircraft wings struck some bush and directional control was lost. The aircraft came to a rest off the right side of the logging road in an upright position, approximately 50 feet into the bush. The pilot was not injured. The aircraft sustained substantial damage. Shortly after, the pilot was picked up by a passing vehicle and taken to CYXL. It was reported that the left auxiliary fuel cell had fuel remaining after the occurrence, while the other auxiliary and main cells appeared empty. Post-occurrence examination and testing of the left auxiliary fuel boost pump indicates that it was defective. The operator has submitted a service difficulty report with Transport Canada.

A Skycare Air Ambulance Swearingen SA226-TC (C-GKPX) from Fort Frances, ON (CYAG) to Thunder Bay, ON (CYQT) reported a hydraulic issue and advised that no assistance was required. The pilot subsequently declared a "PAN PAN" and temporarily entered a hold at CYQT to troubleshoot the issue. The aircraft landed safely at 1447Z. No impact to operations.
UPDATE: TSB Report #A21C0031: C-GKPX, a Swearingen SA226-TC aircraft operated by 2080061 Ontario Inc. (dba Skycare Air Ambulance), was conducting a flight from Fort Frances, ON (CYAG) to Thunder Bay, ON (CYQT). Shortly after departure, the aircraft lost hydraulic pressure. The flight crew declared "PAN PAN" and continued to its destination. A manual landing gear extension procedure was performed and the subsequent landing was conducted without further incident. The operators maintenance personnel replaced a hydraulic pump pressure hose in the left-hand nacelle.

An Air Canada Airbus BD-500-1A11 A220-300 (C-GJXV/ACA317) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Calgary, AB (CYYC) declared "PAN PAN" due to a hydraulic issue and reported that it was diverting to Winnipeg/James Armstrong Richardson, MB (CYWG). The aircraft landed safely at 1609Z.
UPDATE: TSB Report #A21C0013: C-GJXV, an Airbus Canada Limited Partnership A220-300 aircraft operated by Air Canada, was conducting flight ACA317 from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Calgary, AB (CYYC). While cruising approximately 193NM west northwest (WNW) of Winnipeg/James Armstrong Richardson, MB (CYWG), the flight crew received a No. 1 hydraulic system low-pressure warning. The flight crew elected to divert to CYWG and declared "PAN PAN" with ATC. The subsequent landing was uneventful and the aircraft taxied to the gate. The operators maintenance personnel replaced the No. 1 engine-driven hydraulic-pump attenuator and seal.

At 1957Z, the Vancouver Area Control Centre was advised that a WestJet Boeing 737 MAX 8 (C-GAMQ/WJA1862) from Vancouver, BC (CYVR) to Honolulu, HI (PHNL), while in Oakland Oceanic airspace, had declared a "MAYDAY" following a precautionary engine shut down and was returning to CYVR. All appropriate parties were advised and the aircraft arrived safety with no operational impact.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Prior to entering the extended range twin-engine operations (ETOPS) portion of the flight, #1 engine oil filter bypass indication was annunciated. The crew carried out Quick Reference Handbook (QRH) procedures and the engine shut down un-commanded. The crew returned to Vancouver, BC (CYVR) and carried out an uneventful single engine landing. CYVR maintenance found the Transfer Gear Box (TGB) screen oil filter and the Oil Debris Monitor System (ODMS) sensor heavily contaminated with metal and heat damage on the fan frame strut panel that houses the radial drive shaft, indicating a potential radial drive shaft (RDS) bearing failure. A subsequent borescope inspection of the RDS bearing showed significant damage and material loss. The #1 engine oil smelled of hydraulic fluid, oil samples were taken and sent for analysis. The #1 hydraulic engine-driven pump (EDP) did not show signs of overheating/distress and the drive pad did not show signs of hydraulic fluid leaking. The engine was replaced. Service Difficulty Report (SDR) 20211213009 was filed, and an investigation with CFM and General Electric (GE) was ongoing.
UPDATE: TSB Report #A21F0224: C-GAMQ, a WestJet Boeing 737 MAX 8, was conducting flight WS1862 from Vancouver Intl, BC (CYVR) to Honolulu/Daniel K. Inouye Intl, HI (PHNL). During cruise, prior to Extended-range Twin-engine Operational Performance Standards (ETOPS) and approximately 430nm SW of CYVR, the flight crew received an indication of oil filter bypass on the left-hand engine. The flight crew actioned the appropriate checklist, declared a mayday with Oakland oceanic, performed a precautionary shutdown and diverted back to CYVR, where the aircraft landed without further incident.

A Summit Air Aerospatiale ATR 72-202 (SUT7111) from Yellowknife, NT (CYZF) to Kugluktuk, NU (CYCO) returned to CYZF due to a hydraulic issue and requested that the Aircraft Rescue and Fire Fighting (ARFF) unit be on standby. No emergency declared. SU7111 landed safely at 1529Z, with no other impact to operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. En route, approximately 100 miles from Kugluktuk, NU, the green hydraulic system "Low Level" light illuminated. The crew consulted the Quick Reference Handbook (QRH) and shut off the green system hydraulic pump, resulting in a loss of normal landing gear extension/retraction and braking functions. The aircraft diverted back to Yellowknife, NT, where an emergency landing gear extension was completed and the aircraft landed without further incident and was able to taxi to the hangar. Company maintenance inspected the aircraft and found a leak on the hydraulic fitting to the pump, caused by vibration. Pump and fitting were replaced in accordance with (IAW) applicable service instructions. Leak and function checks completed serviceable. The aircraft was returned to service, with no further reported incidents.

A Jazz de Havilland DHC-8-402 (JZA8457) from Calgary, AB (CYYC) to Yellowknife, NT (CYZF) requested a diversion to Edmonton, AB (CYEG) due to a hydraulic issue. 10 minutes later, the aircraft declared "PAN PAN" due to a mechanical issue and returned to CYYC. The Aircraft Rescue and Fire Fighting (ARFF) unit was on standby, and the aircraft landed without incident at 0650Z. No impact to operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. During cruise, the Flight Crew observed several caution lights after the loss of the No. 2 Hydraulic Fluid. A decision was made to conduct an Air Turn Back. Maintenance replaced the No. 2 Engine Driven Pump Case Drain Line that had chaffed at a clamp, and the aircraft was returned to service. Service Difficulty Report No. 20211220010 was submitted.
UPDATE: TSB Report #A21W0109: C-GGOF, a Jazz Aviation de Havilland DHC-8-400, was operating as flight JZA457 from Calgary, AB (CYYC) to Yellowknife, NT (CYZF) with 4 crew and 53 passengers on board. JZA457 had been in cruise for approximately 90 minutes (160 nm S of CYZF) when the flight crew observed a "No. 2 HYD ISO VLV" caution light and an associated loss of hydraulic fluid for the number 2 hydraulic system. Moments later, the flight crew observed the "No. 2 RUD HYD", the "No. 2 ENG HYD PUMP" and the engine hydraulic "CLOSED" lights illuminate. The checklists were consulted and a decision was made to divert to Edmonton, AB (CYEG). A "PAN PAN" was declared and the destination was revised to return to CYYC. At the top of descent, a manual landing gear extension was performed and JZA457 landed in CYYC without further issue. Maintenance replaced P/N 82974584-003 hydraulic line and the aircraft was returned to service.

At 0030Z, an Air Tindi Ltd. de Havilland DHC-6-300 (TIN606) from Whati, NT (CEM3) to Yellowknife, NT (CYZF), inbound, declared "PAN PAN" due to a loss of hydraulic pressure. At 0040Z, TIN606 landed safely on Runway 10. TIN606 shut down on Taxiway C and was towed in by the company. A foreign object debris (FOD) check was completed at 0047Z, with nothing found. No further impact to operations.
UPDATE: TSB Report #A21W0069: C-FATW, an Air Tindi de Havilland DHC-6-300 Twin Otter, was conducting flight TIN606 from Whati, NT (CEM3) to Yellowknife, NT (CYZF). While enroute, the flight crew identified that the flaps had not fully retracted. The hydraulic pressure was indicating 0 and the flaps were retracted manually. The flight crew declared an emergency on approach to CYZF and conducted a successful flapless landing on Runway 10. The aircraft was shut down on the taxiway and towed to the ramp.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. After departing from Whati, NT, the flight crew noticed that the flaps did not fully retract and the main hydraulic pressure gauge was showing zero pressure. The DHC-6 Emergency Procedures Quick Reference Handbook was called for and completed, which resulted in the flaps being retracted by use of the hand pump. The flight continued to Yellowknife, NT. Prior to landing, the hand pump was used again to re-pressurize the main hydraulic system, and a flapless landing was conducted. The aircraft landed without further incident and was able to taxi off the runway and shut down on the taxiway. Company maintenance inspected the aircraft hydraulic system and found the hydraulic pressure switch to be intermittent. This was causing the hydraulic pump relay to not turn the hydraulic pump on to maintain system hydraulic pressure. The hydraulic pressure switch was replaced and a function check of the hydraulic system was completed by testing the flaps and steering systems, with no further failure produced. The aircraft was returned to service and there have been no further reported incidents.

A Sunwest Aviation Learjet 35A (CNK633) from Calgary, AB (CYYC) to Edmonton, AB (CYEG) declared an emergency and returned to CYYC due to a hydraulic issue. The Aircraft Rescue and Fire Fighting (ARFF) unit was requested and responded. CNK633 landed at 1853Z without incident. No impact to operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. The operator advised that shortly after raising the landing gear upon take-off out of Calgary, AB (CYYC), the crew noticed the low hydraulic annunciator flash on and noted the hydraulic pressure gauge falling towards zero. The landing gear had come up properly but when "flaps up" was called, there was no response. The crew advised air traffic control (ATC) and requested a level-off at 8000ft. The crew then ran the Low Hydraulic Pressure emergency checklist and the No Hydraulic Pressure landing checklist. The landing gear was then extended using the emergency extension and they set up for a "flaps 8" landing with no hydraulic pressure. ATC was advised that the aircraft was returning to CYYC. Upon landing, the Thrust Reversers (TRs) were used to assist in slowing the aircraft down and emergency braking was used to bring the aircraft to a stop on the runway. The crew noted that during the approach, the flaps had extended to "full down". The aircraft was subsequently towed from the runway. The company’s maintenance department inspected the aircraft and discovered the retract hydraulic line on the right-hand main landing gear actuator had developed a leak at the terminal swage. As this line is an on-condition part, the company is now evaluating the other hydraulic lines on the aircraft. The company’s maintenance noted that the line was "Teflon" and therefore not subject to a life limit, however, the other Teflon lines are now being replaced and an inspection of the hydraulic pumps and filters is also being carried out. No further action.

TSB Report #A21W0014: C-GAKI, an Alkan Air Ltd. Dornier 228-202, was on a VFR flight from Whitehorse, YT (CYXY) to Mayo, YT (CYMA). On approach into CYMA, the landing gear would not extend. After trouble shooting revealed a failed hydraulic pump, a decision was made to return to CYXY. The flight back to CYXY, the emergency gear extension, and the landing at CYXY were all uneventful. The aircraft was towed back to the hangar. Maintenance update: Company maintenance discovered a blown landing gear current limiter. Upon further inspection, the current limiter turned out to be an incorrect part number (P/N) and amp rating (100A). A new 150 amp current limiter was installed. The landing gear emergency system was serviced as per aircraft maintenance manual (AMM) 32-36-00 and several gear swings were carried out, with no further faults found.

After departing from Runway 08 at 1851Z, a Saskatchewan Public Safety Agency Aero Commander 690D (C-FSPM/BD161) from Prince Albert (Glass Field), SK (CYPA) to La Ronge (Barber Field), SK (CYVC) advised it was returning to land on Runway 26. Assistance was offered and declined. After landing on Runway 26 at 1853Z, the pilot advised they had returned due to smoke in the cockpit but the situation was now back to normal. No impact to operations.
UPDATE: TSB Report #A21C0043: C-FSPM, a Gulfstream American Corporation 690D Aero Commander aircraft operated by the Saskatchewan Public Safety Agency (Air Operations), was conducting flight BD161 from Prince Albert/Glass Field, SK (CYPA) to La Ronge/Barber Field, SK (CYVC). During the initial climb, after taking off from Runway 08, the cabin air became hazy and smoky. The flight crew communicated with Prince Albert FSS radio and advised that the aircraft would perform a 180 degree turn and return to Runway 26. The flight crew conducted the actions for smoke in the cockpit and closed the bleed air valves. The smoke subsequently began to clear. The flight crew declined emergency services and the subsequent landing was uneventful. The operators maintenance personnel determined that the environmental system turbocharger oil pump seal had failed, allowing oil mist to enter the cabin air system. The turbocharger was replaced. The operator submitted Service Difficulty Report (SDR) 20210514012.

A Perimeter Aviation Swearingen SW4 (PAG190) from Winnipeg/James Armstrong Richardson, MB (CYWG) to Thompson, MB (CYTH) declared an emergency, reported an engine failure, and continued to its destination. Emergency Response Services (ERS) were arranged at CYTH. The aircraft landed without further incident at 1526Z. Five aircraft were delayed by 10 to 15 minutes.
UPDATE: TSB Report #A21C0036: C-FAMC, a Fairchild SA227-AC operated by Perimeter Aviation, was conducting flight PAG190 from Winnipeg/James Armstrong Richardson, MB (CYWG) to Thompson, MB (CYTH). When approximately 100NM south of CYTH, the right-hand engine (TPE331-11U-612G) failed. The flight crew secured the engine and declared an emergency with air traffic control (ATC). The aircraft landed safely in CYTH with the Aircraft Rescue and Fire Fighting (ARFF) unit on standby. The operators maintenance removed the engine driven fuel pump and observed that the reduction gearbox fuel pump drive gear had failed. A Service Difficulty Report (SDR) has been submitted.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. C-FAMC had an in-flight shutdown upon descent into Thompson, MB (CYTH). The aircraft landed without any further events. Maintenance found, upon removal of the engine-driven pump (EDP), that the reduction gear box (RGB) drive for the pump had failed. An engine change and tear down will be required to further investigate the cause of the failure. A Service Difficulty Report (SDR) has been generated.

A Perimeter Aviation de Havilland DHC-8-314 (PAG639) from Winnipeg/James Armstrong Richardson, MB (CYWG) to Island Lake, MB (CYIV) rejected its takeoff due to a loss of hydraulic pressure. No operational impact.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. C-GJYZ carried out an aborted its take-off at Winnipeg/James Armstrong Richardson, MB (CYWG) due to a #2 engine-driven pump (EDP) caution light illuminating. All other hydraulic parameters were normal. Maintenance replaced the #2 engine driven hydraulic pump pressure switch and returned the aircraft to service.

A Missinippi Air-Care Beech 200 (MA03) from The Pas/Grace Lake, MB (CJR3) to Winnipeg/James Armstrong Richardson, MB (CYWG) declared an emergency while inbound to CYWG, due to a nose landing gear indication.
UPDATE: TSB Report #A21C0007: C-GOGT, a Beech 200 operated by Beaver Air Services as flight MA03, was conducting a flight from The Pas/Grace Lake, MB (CJR3) to Winnipeg/James Armstrong Richardson, MB (CYWG). After departing CJR3, the flight crew selected "gear up". The nose gear started to retract and then the hydraulic pump stopped running. The main gear remained in the down and locked position. The flight crew continued the climb, declared a "PAN PAN" with ATC, and made the decision to continue to CYWG. On final approach to CYWG, the flight crew completed the emergency landing gear extension checklist and received a nose landing gear down and locked indication. The aircraft landed safely with ARFF on standby and subsequently taxied to the apron. The aircraft was ferried to Winnipeg/St. Andrews, MB (CYAV) for maintenance. The operators maintenance personnel replaced the power pack pressure switch.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On January 15, 2021, the pilot of the aircraft (C-GOGT/MA03) reported that, upon departure from The Pas/Grace Lake, MB (CJR3), the landing gear failed to retract. The nose landing gear (NLG) started retracting, then stopped, and the left-hand (L/H) and right-hand (R/H) main landing gear (MLG) did not retract. The hydraulic retraction system was then inoperative. The NLG indicated as not being down/locked, while the L/H and R/H MLG were indicating as down/locked. The pilot continue to Winnipeg/James Armstrong Richardson, MB (CYWG) with the landing (LDG) gear in this condition. Before landing, the pilot used the emergency "gear down" system, and got the NLG down and indicating as down/locked. The pilot landed at CYWG without incident. Maintenance inspected the NLG and both MLG; there were no obvious faults found. All three LDG gear were braced for security, and a Ferry Permit was issued to fly the aircraft, fixed gear down, to Winnipeg/St Andrews, MB (CYAV) for further investigation of the retraction system. Missinippi Maintenance trouble shot the retraction system, and found that the main pressure control switch (p/n 1225P36-3) on the power pack was faulty. A replacement pressure switch is on order.

At time 1339Z, a WestJet Encore de Havilland DHC-8-402 (WEN3421) from St. Johns, NL (CYYT) to Halifax/Stanfield, NS (CYHZ) requested to return to CYYT due to aircraft equipment issues. The aircraft landed safely at 1359Z. No traffic. No impact to operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. The #2 engine main oil pressure was fluctuating. The #2 engine hydraulic pump drive oil seal was replaced. Service Difficulty Report (SDR) no. 20211008004 was subsequently filed.

A Sunset Aviation Canadair CL-600-2B16 (TWY35) from Bedford, MA (KBED) to Frankfurt, Germany (EDDF) declared an emergency due to stability issues and requested clearance to Stephenville, NL (CYJT). TWY35 landed safely at 1250Z, with no issues. No impact to operations. No assistance required.
UPDATE: TSB Report #A21A0019: N605LC, a Bombardier CL60 aircraft operated by Solairus Aviation, was conducting flight TWY35 from Hanscom Field, MA (KBED) to Frankfurt, Germany (EDDF) with 2 flight crew members onboard. While in cruise flight, the crew advised ATC that the aircraft had a fuel imbalance and requested a diversion to Bradley, CT (KBDL). The crew actioned the associated QRH items, however, the fuel imbalance continued to increase. The crew declared an emergency and requested a diversion to Stephenville, NL (CYJT) as a precaution. The aircraft landed without further incident. The operators maintenance department determined that a faulty auxiliary tank transfer ejector pump was the cause of the fuel imbalance. The remaining fuel in the tail and auxiliary tanks was transferred to the main tanks, the main fuel tanks were balanced and the aircraft was flown to a Bombardier maintenance facility utilizing the air operator’s Minimum Equipment List.

While 50NM East of Rouyn-Noranda, QC (CYUY), a Sky Jet MG Inc. Beech 200 (C-FSKQ/VSL443) from Quebec/Jean Lesage, QC (CYQB) to Rouyn-Noranda, QC (CYUY) declared an emergency due to a landing gear problem. Emergency vehicles were deployed. The aircraft landed at CYUY at 1339Z. The landing gear collapsed during the landing. The National Operations Centre (NOC), the Transportation Safety Board of Canada (TSB) and the Joint Rescue Coordination Center (JRCC) Trenton were notified. No injuries. Impact: Runway closed by NOTAM, 3 aircraft were diverted to another airport (an Exact Air Inc. aircraft (flight ET839), a Hydro-Quebec de Havilland DHC-8 (HYD207), and a Pascan aircraft (flight PSC366)). A privately registered Beech C-23 flew over the facilities instead of conducting a touch-and-go.
Update TSB Report #A20Q0072: C-FSKQ, a Beechcraft 200 operated by Skyjet Aviation with the callsign VSL443 was on a flight according to instrument flight rules from Québec/Jean Lesage airport, QC (CYQB) to destination of Rouyn-Noranda, QC (CYUY) with 2 crew members and 8 passengers on board. While retracting the landing gear from CYQB, the crew heard a noise, but this one didnt seem to be of concern. On approach for Runway 26 at CYUY, when the the landing gear control lever was operated to extend the gear, there was no effect. The approach was aborted and the emergency checklist was completed. The crew attempted to exit the train manually, but no pressure on the emergency lever was perceived and the train did not exit. A second attempt was made and the nose gear was pulled out and locked however there was no pressure left in the manual pump to exit completely the main gear. A low approach was carried out so that ground personnel can check the position of the train. The 3 wheels appeared to be out and the crew declared an emergency to land on Runway 26. Passengers received emergency instructions and the device has landed. The touchdown was normal, but when the speed reached about 60 knots, the right main landing gear sagged, followed by the left. The aircraft was evacuated and there were no injuries. A cursory inspection of the aircraft revealed that the landing gear system circuit breaker was in the pulled out position.
UPDATE Duplicate AOR 266811-V1: After lowering the landing gear manually, the pilot of C-FSKQ conducted a low altitude pass for a visual check. The pilot declared an emergency and, upon landing, the gear collapsed when at low speed on the runway. No injuries. Runway closed until further notice (UFN). (Duplicate AOR 266811-V1 / CADOR 2020Q2381 deleted after information merge)

An Exact Air Beech A100 (C-FDOS/ET824) from Poste Montagnais (Mile 134), QC (CSF3) to Chicoutimi/St-Honoré, QC (CYRC) declared PAN PAN due to a landing gear issue. Emergency vehicles were deployed. The aircraft landed without issue at 1602Z. A runway inspection was conducted and nothing abnormal was found. No impact to operations.
Update TSB Report #A20Q0054: C-FDOS, a Beech A100 operated by Exact Air Inc., flew ET824 according to instrument flight rules from Poste Montagnais, QC (CSF3) to Chicoutimi/St-Honoré airport, QC ( CYRC) with 2 crew members on board. While the aircraft was cruising towards CYRC, the hydraulic pump warning light flashed intermittently. The crew pulled the pump circuit breaker to prevent it from overheating. A few minutes later, the "Gear Unsafe" lights came on; the crew selected the deployment of the landing gear and the train partially extended. The pump stopped and the transition lights remained on. The crew successfully completed the manual landing gear extension procedure. The crew then declared an emergency and requested priority. The aircraft landed safely at 1602Z. There were no casualties. Maintenance personnel diagnosed a failure of the hydraulic pump.

A Perimeter Aviation Fairchild SA227-AC (C-FYAG/PAG907) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Montreal/Pierre Elliott Trudeau, QC (CYUL) asked to be redirected to Montreal/Mirabel, QC (CYMX) due to an engine that would not start up again after tests were conducted. At that time, no emergency was declared. On final 5 NM Runway 24, the aircraft declared an emergency with the tower at CYMX. Aircraft Rescue and Fire Fighting (AARF) services were deployed. The aircraft landed at 2249Z without incident and a runway inspection was completed at 2255Z. No impact.
UPDATE TSB Report #A20Q0038: C-FYAG, a Fairchild SA227AC operated by Perimeter Aviation LP under flight number PAG907, was flying under instrument flight rules from Montreal/Pierre Elliott Trudeau International, QC (CYUL) airport on a local flight in order to perform flight tests. After voluntarily shutting down an engine, the crew was unable to restart it. The crew therefore requested to be redirected to Montreal/Mirabel, QC (CYMX), where they declared an emergency. The aircraft landed without incident.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Metro 3 aircraft C-FYAG, while on a flight test program, was carrying out single engine performance checks when the shutdown engine failed to restart. Flight crew declared an emergency and returned to the airport uneventfully. Maintenance performed a functional test of the right-hand (RH) feather valve, performed a functional test of the RH auto ignition system as per Maintenance Manual (MM) 72-10-06, performed a functional test of the RH engine unfeather system, and performed a functional test of the RH I/B squat switch. The RH engine unfeather pump output pressure was checked and found to be set at 180psi. The RH unfeather pump pressure was adjusted to 210psi.

TSB Report #A20P0081: C-GHHA, a Harbour Air float equipped de Havilland DHC-6 aircraft, was conducting flight HES243 from Vancouver Harbour (CYHC), BC, to Victoria Harbour (CYWH), BC, with 2 crew members and 8 passengers on board. Shortly after departure, the flight crew became aware of a burning smell and a squealing noise. The flight declared an emergency and returned to CYHC, where the aircraft landed and taxied to the dock without further incident. The operators maintenance crew determined that a hydraulic pump had failed to build enough pressure to automatically shut-off, and was operating continuously, subsequently overheating. The operator has filed a service dificultly report, replaced the hydraulic pump, and the aircraft was returned to service.
UPDATE: AOR-267073-V1: A Harbour Air de Havilland DHC-6-300 (C-GHHA/HR243) from Vancouver Harbour, BC (Water) (CYHC) to Victoria Harbour, BC (Water) (CYWH) departed CYHC. While climbing through 1600 feet over Kits Point, HR243 requested to return to CYHC to land due to a mechanical issue on board. HR243 landed without further issue.

A privately registered Cessna 172M from Langley, BC (CYNJ) to Vancouver/Boundary Bay, BC (CZBB) requested taxi clearance from Hangar 1 to the fuel pumps. Hangar 1 and the fuel pumps are on the the same uncontrolled apron, so the tower instructed the pilot of the Cessna 172M to proceed at their discretion. The Cessna 172M was then observed taxiing from a different apron, using the controlled Taxiways Delta and Alpha, without authorization. No impact to operations.

A Carson Air Fairchild SA227-AC (C-FAFR/CA8057) from Vancouver, BC (CYVR) to Kelowna, BC (CYLW) declared a hydraulic failure. Requested that the Aircraft Rescue and Fire Fighting (ARFF) unit be on standby. Aircraft landed safely.
Update TSB Report #A20P0057: C-FAFR, a Fairchild SA227-AC operated by Carson Air Ltd, was conducting a cargo flight from Vancouver Intl. (CYVR), BC, to Kelowna (CYLW), BC, with 2 flight crew members onboard. During descent into CYLW, the crew observed a hydraulic pressure annunciator light with a corresponding low pressure indication. The crew followed the emergency checklist, advised the CYLW tower of a hydraulic failure, and requested ARFF on standby. The crew lowered the landing gear manually and carried out a flapless landing without incident. There were no reported injuries and no damage to the aircraft. Maintenance found the right hand hydraulic pump return line was chaffed through at the hydraulic reservoir. The rigid return line was temporarily replaced with a flexible line as per the AMM and the hydraulic system was ground tested satisfactory.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. On approach into CYLW, C-FAFR experienced fluctuating hydraulic pressure, accompanied by both hydraulic warning lights and subsequent hydraulic failure. The crew completed the hydraulic failure checklist and completed a manual landing gear drop and flapless landing. On the ground, maintenance found hydraulic fluid dripping from the right-hand (R/H) engine cowl and landing gear doors, further inspection revealed a pinhole leak in a chaffed hydraulic line at the R/H engine firewall. It appeared that the line had chaffed against a clamp on an adjacent line, causing the leak. The damaged line was replaced, the hydraulic system was tested for function and the aircraft was returned to service. A Safety Management System (SMS) investigation was carried out, as there had been no previous failures of this part number (P/N) line in the fleet and the area has a general visual inspection every 300hrs under the Phase Inspection Program. The operator has published a bulletin for company ACA holders and will monitor the fleet for further failures of this type.