An Air Creebec Inc. de Havilland DHC-8-106 (C-GXCN/CRQ235) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chibougamau/Chapais, QC (CYMT) lost localizer performance with vertical guidance (LPV) service around 4200ft, while on approach.

A privately registered Robinson R44 II on a flight to Chicoutimi/St-Honore, QC (CYRC) crashed under unknown circumstances.
UPDATE: Aviation Incident Report: A privately registered R44 helicopter, on a local flight from Chicoutimi/St-Honoré, QC (CYRC), crashed near Saint-Henri de Taillon, QC, in the vicinity of Lac Saint-Jean. There were 2 souls on board who sustained minor injuries. Emergency crews arrived on the scene and the Transportation Safety Board of Canada (TSB) has been notified.
UPDATE: TSB Report #A21Q0006: A privately registered Robinson R44 helicopter, was on a visual flight rules flight to and from Chicoutimi/St-Honore, QC (CYRC) airport with a pilot and one passenger on board. The pilot was hovering about 20 or 30 feet from the ground in front of a chalet located on the shores of Lac St-Jean, in the Saint-Henri-de-Taillon sector. As the pilot turned to the right, the helicopter lost altitude. The pilot attempted to sustain the aircraft at the lower altitude, but had to land the helicopter in the snow. The left skid sank and the helicopter flipped over. When the aircraft came to a stop, the pilot shut down the engine, which was still running. The pilot and passenger evacuated and sustained minor injuries. The helicopter sustained significant damage. The emergency locator transmitter (ELT) did not activate.

A Sky Regional Airlines Embraer ERJ 170-200 SU (SKV7557) from Halifax/Stanfield, NS (CYHZ) to Montreal/Pierre Elliott Trudeau, QC (CYUL) initiated an ascent following a message from the Aircraft Communications Addressing and Reporting System (ACARS), then returned to land but lost the nose wheel handling on A1. The aircraft was towed to the barrier at 2310Z. No impact on operations.

Delayed entry as a result of NAV CANADA safety and evaluation quality assurance (QA) review: A Government of Canada, Department of National Defence McDonnell Douglas F-18 (VIMY11) from Bagotville, QC (CYBG) to Greenwood, NS (CYZX) lost communication with the Canadian Air Defence Sector (CADS) while following the "scramble, intercept and recovery" (SIR) procedure. A Turkish Airlines Boeing 777-300 (THY7) from Istanbul, Turkey (LTFM) to Washington-Dulles, VA (KIAD) was vectored to maintain separation. Separation was not lost. No impact to operations.

At Val-dOr (CYVO), QC, a vehicle (ST27) advised that maintenance personnel had lost a screw (1 inch in diameter by 3 inches long) on the runway. A runway inspection was conducted. The runway was swept almost completely and no screws were found. A 30-minute departure delay occurred for an Air Creebec de Havilland DHC-8-402 (CRQ273) from Val-dOr, QC (CYVO) to Waskaganish, QC (CYKQ).

The pilot of a Lindsey Composites Inc. Mooney M20E (C-FPXG) from Salmon Arm, BC (CZAM) to Kelowna, BC (CYLW) advised that the aircraft had lost a door handle and the door was subsequently secured with a seatbelt. No assistance required. A foreign object debris (FOD) check was completed at 2055Z, with nothing found.

A Hoarfrost River Huskies Ltd. Christen A-1B (C-GTYC) from Yellowknife, NT (Water) (CEN9) to Fort Nelson, BC (CYYE) landed on Runway 26, lost control while braking after landing, and struck its wing on the runway. The pilot did not require assistance. Airport maintenance was dispatched to check for foreign object debris (FOD). No impact on operations.

TSB Report #A21P0011: C-GCHJ, a Sikorsky S-76C operated by Helijet International Inc., on a MEDEVAC flight, was on approach to the Campbell River Hospital, BC (CAT6) helipad when the pilot flying (PF) momentarily lost sight of the helipad and deviated slightly to the right. The pilot monitoring (PM) advised the PF that the pad was on the left of the helicopter; the aircraft was about 10 feet above the helipad at this time, and the PF recovered to about 25 feet above it, before continuing forward and down.

The flight service station (FSS) received a notification from the area control centre (ACC) that a Pacific Coastal Airlines Ltd. Beech 1900 (PCO866) from Port Hardy, BC (CYZT) to Vancouver, BC (CYVR) had declared a MAYDAY due to a lost engine. PCO866 landed at CYZT without incident at 0026Z.

The Royal Canadian Mounted Police (RCMP) and the Transportation Safety Board of Canada (TSB) reported an aircraft accident at Princeton, BC (CYDC). At approximately 2310Z (1610 PDT), a BP Aviation Ltd. Cessna 172M (C-GHBM) on a VFR flight plan from Penticton, BC (CYYF) to Penticton, BC (CYYF), with a stopover at CYDC, departed CYDC for Oliver, BC. The pilot reported experiencing a downdraft upon take-off from Runway 04, and subsequently lost control. The aircraft went through a fence and hit the median of Highway 5A. The pilot experienced only minor injuries, however, the aircraft suffered extensive damage, including a fuel leak. The TSB authorized the removal of the aircraft due to its location. (Information from Aviation Incident Report (AIRA) incorporated into narrative summary)

A privately registered Cessna 152 from Abbotsford, BC (CYXX) to Abbotsford, BC (CYXX) lost communications exiting the control zone. The aircraft orbited Aldergrove, squawked 7600 and called the tower. The pilot was given landing information and a green light on final. The aircraft landed without incident.

An American, privately registered Piper PA-22-150 from Dawson Creek, BC (CYDQ) to Fort Nelson, BC (CYYE) landed on Runway 04 and lost control while speed taxiing and struck its wing on the runway. The pilot reported no damage and required no assistance. Airport maintenance was dispatched to check for foreign object debris (FOD). No impact on operations.

A Central Mountain Air Ltd. Beech 1900D (C-GFSV/GLR8480) from Prince George, BC (CYXS) to Terrace, BC (CYXT) lost communications with the Vancouver Centre and the Terrace (YXT) radio when holding above CYXT and began squawking code 7600. Communication was re-established with Terrace (YXT) radio using the backup radio at 1938Z. No impact to operations.

The nose wheel of a Pacific Rim Aviation Academy Inc. Diamond DA 20-C1 (C-GDDP) from Pitt Meadows, BC (CYPK) to Pitt Meadows, BC (CYPK) fell off during a touch-and-go. Air traffic control (ATC) noticed and advised the pilot. The aircraft circled until emergency vehicles were at the airport and then landed on Runway 26L. All occupants exited the aircraft safely, but the aircraft was disabled on the runway. Other traffic was moved to Runway 26R.
UPDATE: TSB Report #A21P0002: C-GDDP, a Pacific Rim Aviation Academy Diamond DA 20-C1, was conducting circuit training at Pitt Meadows, BC (CYPK) with 1 instructor and 1 student onboard. The lesson was focused on short-field take-offs and soft field landings. During the 5th circuit, the crew observed a small vibration upon touchdown, however, the vibration was minimal due to the back pressure on the flight controls as part of the soft field landing procedure. Once flaps were selected to take-off, the vibration increased slightly and then the aircraft became airborne. On the cross-wind leg, the CYPK tower advised the pilot that the aircraft may have lost the nose wheel. The pilot conducted a "low and over" while the tower confirmed that the nose wheel had departed the aircraft. The aircraft was put into an orbit above CYPK while emergency crews were assembled on the ground and checklists were completed in the aircraft. Approximately 25 minutes later, the aircraft landed. During the landing, the aircraft was operated at a reduced airspeed, with the fuel and magnetos shut off. The front nose gear strut broke off the aircraft and the aircraft slid to a stop on the front lower engine cowl. There were no injuries and no fire.

An Island Air Flight School & Charters Inc. Cessna 150M (C-GHZL), in the circuit at Toronto/Billy Bishop, ON (CYTZ) and with an instructor on board, lost the ability to hear instructions over the radio. Without the proper clearance or any communication, the aircraft proceeded to conduct 2 touch-and-go manoeuvres on Runway 26. The tower attempted to contact the aircraft by radio and a light gun was used on both occasions to initiate a full-stop landing. Radio communication was re-established and C-GHZL was then denied authorization to remain in the circuit and was given a landing clearance. Minimal impact to operations.

A Diamond Flight Centre London Inc. Diamond DA 20-C1 (C-GDFJ) from London, ON (CYXU) to London, ON (CYXU) lost communications, was possibly "receiver only" (RONLY), and squawked 7600. The aircraft turned left base for Runway 15 at 1500 feet. A Diamond Flight Centre London Inc. Diamond DA40 (C-GDFE), on final for Runway 15 at CYXU, was instructed to turn off the approach, as C-GDFJ was cutting C-GDFE off. C-GDFJ then landed without any further impact to operations.

An Aviation Peak Inc. Eurocopter EC-130 B4 (C-FWFJ), en route to Toronto/Billy Bishop, ON (CYTZ), advised that it was conducting a landing 6NM west of CYTZ due to deteriorating weather. Communication with the aircraft was initially lost, but was subsequently re-established after the aircraft executed a successful landing. The Joint Rescue Coordination Centre (JRCC) Trenton and the Aviation Operations Centre (AVOPS) were advised. No impact on operations.

A privately registered Cessna 140X on a VFR flight from London, ON (CYXU) to London, ON (CYXU) lost radio communications on left base for Runway 33. The light gun was used to authorize the landing. Once on the runway, the pilot re-established communications and stated that they had briefly lost their generator. No impact on operations.

A Diamond Flight Centre London Inc. Diamond DA 20-C1 (C-GDFO) from London, ON (CYXU) to London, ON (CYXU), inbound from the northwest (NW), was given a clearance. Shortly after, the pilot called on the tower land-line (while still outside of the control zone) and stated that they had lost communications. The pilot squawked 7600 and was once again cleared inbound. The pilot then re-established communications on their hand-held radio and landed without further incident.

A Fly Genesis Inc. Diamond DA40 (C-GUBB) on a flight from Collingwood, ON (CNY3) was cleared, from the north, for the left downwind for Runway 09 at London, ON (CYXU). The aircraft was observed not turning downwind. The aircraft was instructed to continue over the field, and was subsequently given instructions to follow traffic in the right-hand pattern for Runway 09, which the pilot could see. The pilot then proceeded to start turning in front of the traffic. This was "sorted out" by the London tower. When the pilot was questioned, they stated that they had lost the traffic. As a result, several aircraft were delayed.

A Waterloo-Wellington Flying Club Cessna 172S (C-GUZZ) from Kitchener/Waterloo, ON (CYKF) to Kitchener/Waterloo, ON (CYKF) lost communication on the threshold of Runway 14.

During the take-off roll, a privately registered Piper PA-28R-180 from Brockville, ON (CNL3) to Brockville, ON (CNL3) encountered a crosswind and slid into a snow bank on the side of Runway 04.
UPDATE: Aviation Incident Report: At approximately 1550Z on February 20, 2021, a privately registered Piper PA-28R-180 encountered a crosswind and slid into a snowbank on the side of Runway 04 at Brockville/Tackaberry, ON (CNL3). There was 1 soul on board (SOB) and no injuries. The aircraft had a front wheel collapse, a bent propeller and damage to the right wing. The aircraft was pulled out of the snow and the Transportation Safety Board of Canada (TSB) was notified.
UPDATE: TSB Report #A21O0010: A privately registered Piper PA-28R-180 was conducting circuits on Runway 04 at Brockville/Tackaberry (Thousand Islands), ON (CNL3). During the second take off, prior to becoming airborne, directional control was lost; the aircraft veered to the left and exited the runway into deep snow. The pilot was not injured but the aircraft was substantially damaged.

A Toronto Airways Inc. Cessna 172S (C-FWLQ) from Toronto/Oshawa, ON (CYOO) to Toronto/Oshawa, ON (CYOO) lost engine power after landing on Runway 23 and was unable to coast out of the runway protected area (RPA) onto Taxiway B. The active runway was changed to Runway 30. Minimal delay to operations.

A C340 Holdings Corp. Cessna 340A (C-GSGQ) from Ottawa/Macdonald-Cartier, ON (CYOW) to Toronto/Buttonville, ON (CYKZ) advised air traffic control (ATC) that it had lost one of two engines and diverted to Peterborough, ON (CYPQ). No emergency was declared. C-GSGQ landed safely and without further incident at 2045Z. No services were required on the ground. No impact to operations.
UPDATE: TSB Report #A21O0008: C-GSGQ, a privately operated Cessna 340A, was conducting an IFR flight from Ottawa/Macdonald-Cartier, ON (CYOW) to Toronto/Buttonville, ON (CYKZ) with one pilot and two passengers on board. During descent from 5000 feet, the right hand (RH) engine (Teledyne Continental TSIO-520-NB) failed due to fuel starvation, as the RH auxiliary fuel tank had been emptied. Attempts to restart the engine after selecting the main tank were unsuccessful, and the pilot arranged with ATC to divert to nearby Peterborough, ON (CYPQ), where an uneventful landing was made at 2043Z. The vapor lock was the suspected cause of the failed restart attempts while airborne. On the apron at CYPQ, the RH engine was restarted successfully and a run-up was conducted, which revealed no anomalies. The pilot departed at 2115Z and arrived uneventfully at the planned destination of CYKZ.

A Waterloo-Wellington Flying Club Cessna 152 (C-GYHN) from Kitchener/Waterloo, ON (CYKF) to Kitchener/Waterloo, ON (CYKF) declared "Mayday" in the late downwind position due to an engine failure. The aircraft subsequently landed safely at 1750Z.
UPDATE: TSB Report #A21O0012: C-GYHN, a Waterloo Wellington Flying Club Cessna 152, was on final approach to Kitchener/Waterloo, ON (CYKF) after a local flight, with a student and instructor on board. During the approach, the engine lost power and the instructor declared a MAYDAY. The aircraft continued the approach and performed an uneventful landing. Subsequent inspection by maintenance found a cracked crankcase and the #3 and #4 connecting rod separated from the crankshaft. The oil level during the pre-flight walk-around showed 5 quarts, and there was oil evident after the failure. Maintenance issued an SDR on the occurrence number 20210217022.

The Toronto area control centre (ACC) was advised by both the National Operations Centre (NOC), which had been advised by the Aviation Operations Centre (AVOPS), and by the Joint Rescue Coordination Centre (JRCC) Trenton of an aircraft accident at Lake Eugenia, ON, involving a privately registered, amateur-built Vans RV 7A. There are no injuries and the damage is unknown. No NAV CANADA involvement.
UPDATE: TSB Report #A21O0002: An privately registered, amateur-built Vans RV-7A was conducting a local private sightseeing flight from Kitchener/Waterloo, ON(CYKF) with only the pilot onboard. While cruising northbound in the direction of Collingwood, ON, the engine lost power. The pilot made a 180 degree turn for a precautionary landing on Eugenia Lake, which was frozen and snow covered. During the landing, the nose landing gear collapsed, however, the aircraft did not flip over. The propeller and wheel fairings were also damaged. The pilot exited the aircraft without injury. Police services attended the site.

An emergency locator transmitter (ELT) signal was reported at 2000Z by a privately registered Cessna 172L at A025, 20NM North of Peterborough, ON (CYPQ), in the area of Bobcaygeon, ON. The signal was strong and lasted for approximately 12 minutes. The Toronto area control centre (CZYZ) shift manager was notified, and confirmed that there were multiple reports in the area. The shift manager was notified again when the signal was lost at 2012Z. The signal was reported as "ending", not fading out, 10NM northeast of Lindsay/Kawartha Lakes, ON (CNF4).

An emergency locator transmitter (ELT) signal was reported by a WestJet Encore Ltd. de Havilland DHC-8-402 (WEN3214) from Winnipeg/James Armstrong Richardson, MB (CYWG) to Thunder Bay, ON (CYQT). The signal was lost after 30 seconds. No other aircraft reported receiving the signal.

At Hamilton, ON (CYHM), upon coming out of the CAT II configuration, after turning the generator off, the tower lost the ability to transmit on both the ground and tower frequencies. The receiving function was still operational. Backup frequency was operational for the tower and ground frequency was operational via portable radio. No operational impact.

An American, corporately registered Cessna 182 (N171ST) on a flight to Bellingham, WA (KBLI) was inbound to KBLI when it lost all electrical power, including radios. The pilot called the Victoria Terminal on the telephone and the terminal controller coordinated instructions with the KBLI tower. The pilot did not declare an emergency. The aircraft landed safely at 1922Z.

Aviation Incident Report: A Flightpath Charter Airways Embraer EMB-505 (C-FMPN) from Toronto/Lester B. Pearson, ON (CYYZ) to West Palm Beach, FL (KPBI) was passing through the Atlanta Air Route Traffic Control Center (ARTCC) airspace, somewhere along Airway Q103 in Charlotte, NC airspace, when the aircraft lost communication with the Sector Controller. The flight crew was unaware that they had lost communication and continued towards KPBI. After they noticed that the frequency was quiet and there had been no hand-off to a subsequent frequency, they contacted air traffic control (ATC) through alternate means and subsequently re-established communications. The flight continued to KPBI without further incident.

A privately registered Cessna 172N from Edmonton/Villeneuve, AB (CZVL) to Edmonton/Villeneuve, AB (CZVL) lost its engine power after landing, and was unable to exit Runway 26. Minimal impact on operations.

A 536009 Yukon Inc. Cessna 182Q (C-FWOR) from Calgary/Springbank, AB (CYBW) to Calgary/Springbank, AB (CYBW) lost radio communication and contacted CYBW air traffic control (ATC) via cellphone. C-FWOR landed on Runway 35 at 1626Z with no issues. Several departures were delayed to accommodate C-FWOR.

A Synergy Aviation Ltd. Beech C90 (C-GCFB) from Edmonton/Villeneuve, AB (CZVL) to Yellowknife, NT (CYZF) reported an engine failure and returned to CZVL. At 1548Z, C-GCFB declared an emergency. C-GCFB landed without incident at 1557Z. No impact to operations.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. The company was contacted, and the company explained that on February 26th, they conducted a precautionary shut down of the right engine due to low oil pressure. Once on the ground, they found the oil cap had not been seated properly and so they had lost oil in flight. The engine had 3 litres of oil remaining. They completed ground maintenance runs and a flight test, and the engine checked out as fine. The company conducted a Safety Management System (SMS) review and provided a root cause analysis to determine the causes, with associated corrective action plans, on March 08, 2021. The Transportation Safety Board of Canada (TSB) was also informed of the incident by the company.

TSB Report #A21C0018: C-GECO, a ski-equipped Cessna 185F operated by Kississing Lake Lodge (dba Wings Over Kississing), was enroute from Egenolf Lake, MB, to Thompson, MB (CYTH), with only the pilot onboard. While in cruise, the engine (Teledyne Continental IO-520-D) lost complete power. The fuel selector was set to "both" and the pilot then attempted to restart the engine, without success. The pilot then successfully forced a landing of the aircraft on Pine Lake, MB. The pilot was not injured. The aircraft did not sustain any damage. The pilot was subsequently picked up in a helicopter by the air operator. An inspection of the fuel cells after landing revealed that they were dry, and excessive fuel staining/streaks were found coming from the outboard fuel caps and on the underside of the flaps.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. The company responded that C-GECO had taken off from Egenolf Lake, MB, to Thompson, MB (CYTH), but had an engine shutdown due to fuel starvation, leading to an "engine off" landing in Pine Lake. Upon investigation, it was found that due to extreme cold and moisture, ice had built up, causing the fuel vents to clog, leading to fuel starvation to the engine and the bladders to collapse. For the corrective action, the fuel vents were cleaned and the tanks were inspected and refuelled. Extended engine run-ups were carried out to confirm operation and the aircraft flew back to base safely.

An Air Navigation Data Inc. Piper PA-46-310P (C-GGUU) from Victoria Intl, BC (CYYJ) to Winnipeg/James Armstrong Richardson Intl, MB (CYWG) lost radio contact with air traffic control (ATC) on the frequency transfer from 132.25 MHz to 119.5 MHz. The aircraft descended on the standard terminal arrival (STAR) and established contact with the Winnipeg tower 12NM southeast of CYWG. The arrival controller relayed the approach clearance to the tower controller, and the aircraft landed safely on Runway 31. No other impact to operations.

Delayed entry as a result of NAV CANADA safety and evaluation quality assurance (QA) review: A Springbank Air Training College Ltd. Cessna 172P (C-FDAJ) from Calgary/Springbank, AB (CYBW) to Calgary/Springbank, AB (CYBW) switched to code 7600 while inbound and 5NM north northeast (NNE), believing radio communication may have been lost. However, communication was maintained and a landing clearance was given shortly after. One inbound IFR aircraft, a privately registered Cessna 425, volunteered to cancel its approach and executed a 360 degree turn to give C-FDAJ priority.

After receiving the airport advisory, a Winnipeg Aviation (2003) Ltd. Piper PA-28-140 (C-GQPN) from Winnipeg/St. Andrews, MB (CYAV) to Winnipeg/St. Andrews, MB (CYAV) lost the ability to transmit, and was "receiver only" (RONLY). The aircrafts intentions were determined by it squawking its identification and via phone. The pilot elected to continue to the flight plan destination of CYAV. The Centre Shift Manager (CSM), the Winnipeg flight information centre (FIC) and the CYAV tower were advised. A Winnipeg Aviation (2003) Ltd. Piper PA-28-140 (C-GQPR) had its departure delayed by 1 minute, no other operational impact.

A Morningstar Air Express Inc. Aerospatiale ATR 72-202 (MAL7949) from Regina, SK (CYQR) to Calgary, AB (CYYC) lost communication with the terminal. The approach clearance was relayed through the CYYC tower. No impact to operations. The aircraft landed at 2246Z without issues.

At Grande Prairie, AB (CYQU), a privately registered Piper PA-22-135 was conducting circuits on Runway 25 when it lost control on a touch-and-go and veered off Runway 25, with the right tire becoming damaged upon landing. The Aircraft Rescue and Fire Fighting (ARFF) unit was notified via the crash alarm and responded to the scene. There were no injuries. The wind increased from "260@4" at 2150Z to "260@44g58" at 2155Z when the Piper PA-22-135 was on short final. An Adventure Aviation Inc. Cessna 172M (C-GYYM) shut down on Taxiway Charlie, short of Runway 25, due to the wind. An Adventure Aviation Inc. Cessna 172N (C-GYLF) that was inbound to Grande Prairie, AB (CYQU) diverted to DeBolt, AB (CFG4). The departure of a Jazz de Havilland DHC-8-311 (C-FRUZ/JZA8476) from Grande Prairie, AB (CYQU) to Calgary, AB (CYYC) was delayed by approximately 60 minutes. No other impact to operations. (Reference CADORS 2021C0287 and 2021C0304)

At Grande Prairie, AB (CYQU), a privately registered Piper PA-22-135 was conducting circuits on Runway 25 when it lost control on a touch-and-go and veered off Runway 25, with the right tire becoming damaged upon landing. The Aircraft Rescue and Fire Fighting (ARFF) unit was notified via the crash alarm and responded to the scene. There were no injuries. The wind increased from "260@4" at 2150Z to "260@44g58" at 2155Z when the Piper PA-22-135 was on short final. An Adventure Aviation Inc. Cessna 172M (C-GYYM) shut down on Taxiway Charlie, short of Runway 25, due to the wind. An Adventure Aviation Inc. Cessna 172N (C-GYLF) that was inbound to Grande Prairie, AB (CYQU) diverted to DeBolt, AB (CFG4). The departure of a Jazz de Havilland DHC-8-311 (C-FRUZ/JZA8476) from Grande Prairie, AB (CYQU) to Calgary, AB (CYYC) was delayed by approximately 60 minutes. No other impact to operations. (Reference CADORS 2021C0287 and 2021C0305)

At Grande Prairie, AB (CYQU), a privately registered Piper PA-22-135 was conducting circuits on Runway 25 when it lost control on a touch-and-go and veered off Runway 25, with the right tire becoming damaged upon landing. The Aircraft Rescue and Fire Fighting (ARFF) unit was notified via the crash alarm and responded to the scene. There were no injuries. The wind increased from "260 at 4" at 2150Z to "260 at 44g58" at 2155Z when the Piper PA-22-135 was on short final. An Adventure Aviation Inc. Cessna 172M (C-GYYM) shut down on Taxiway Charlie, short of Runway 25, due to the wind. An Adventure Aviation Inc. Cessna 172N (C-GYLF) that was inbound to Grande Prairie, AB (CYQU) diverted to DeBolt, AB (CFG4). The departure of a Jazz de Havilland DHC-8-311 (C-FRUZ/JZA8476) from Grande Prairie, AB (CYQU) to Calgary, AB (CYYC) was delayed by approximately 60 minutes. No other impact to operations. (Reference CADORS 2021C0304 and 2021C0305)
UPDATE: TSB Report #A21W0002: A privately registered Piper PA-22-135 was conducting a local instructional flight from Grand Prairie, AB (CYQU) with two persons on board. The aircraft departed CYQU at 2142Z. On the downwind leg of the circuit for Runway 25, the winds were reported as gusting to 25 knots. When the aircraft touched down on the runway for landing (at approximately 2155Z), a wind gust picked up and the aircraft departed off the north side of the runway, into the snow. Prior to the flight, the METAR issued at 2100Z reported that the winds were 330 at 7 knots. At 2158Z, a SPECI was issued stating that the winds were 270 at 45G60 knots. The aircraft remained upright, but the right hand main landing gear was damaged. There were no injuries.

While in the circuit at Calgary/Springbank, AB (CYBW), a Calgary Flying Club Piper PA-34-200T (C-GXAR) was cleared for a touch-and-go for Runway 26, with instructions to follow traffic, a Calgary Flying Club Cessna 172N (C-GNDP), which was ahead in the circuit. C-GXAR lost sight of the traffic and was overtaking C-GNDP, on the inside, while on the downwind. The controller ensured visual separation and widened out C-GXAR until they reported traffic in sight.

A privately registered Mooney M20F from Airdrie, AB (CEF4) to Nelson, BC (CZNL) was enroute to CZNL when they experienced Minimum VFR/IFR conditions and issued a "MAYDAY", as the aircraft had become disorientated. The aircraft descended below the clouds, then followed the highway back towards Calgary. The aircraft landed safely at CEF4 at 2003Z, no impact to operations.
UPDATE: TSB Report #A21P0001: A privately registered Mooney M20F departed Airdrie, AB (CEF4) for an instrument flight rules (IFR) flight to Nelson, BC (CZNL) with 1 pilot on board. At approximately 1906Z, when the aircraft was 28NM northeast of Fairmont Hot Springs, BC (CYCZ), the pilot declared an emergency and informed air traffic control (ATC) that the aircraft’s attitude indicator had failed. ATC provided several instructions in an attempt to assist the pilot, who was flying in instrument meteorological conditions (IMC). During a left turn, the aircraft entered an unintentional descent and entered a valley in the vicinity of Kananaskis Lake, AB. The aircraft lost direct radio contact with ATC, but the pilot was able to continue to relay emergency communications through other aircraft flying in the area. The pilot was able to fly visually along Highway 40 to exit the valley. The aircraft returned to CEF4 without further incident.

A Centennial Flight Centre Inc. Cessna 172M (C-GBNB) on a flight to Edmonton/Villeneuve, AB (CZVL) lost radio communications. The pilot established contact via cell phone. The aircraft landed safely. No impact.

A Kreos Aviation Inc. Cessna 680 (C-GJAE) from Vancouver, BC (CYVR) to Regina, SK (CYQR) was en route when the aircraft entered an area of severe turbulence and lost 3000 feet of altitude. The aircraft was able to ascend back to F450 approximately 04 minutes later, no impact to operations.
UPDATE from Flight Operations: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. The aircraft (C-GJAE) was sent for a heavy turbulence check, and no maintenance issues were found.

At 0714Z, the Moncton (QM) Technology Operations Coordination Centre (TOCC) advised the Halifax/Stanfield, NS (CYHZ) tower that HZ radar had lost its "registration" and must be taken offline. No impact.

The Fredericton, NB (CYFC) tower lost the ability to transmit and receive on the main frequency and the backup frequency for 119.0 MHz. The tower switched to the hand-held radio (NICAN). The Technology Operations Coordinator (TOC) was advised. No impact on operations.

At 1950Z, the Fredericton, NB (CYFC) tower lost the ability to transmit and receive on tower frequency 119.0 MHz. At this time, a Moncton Flight College Diamond DA 20-C1 (C-FJYQ) from Fredericton, NB (CYFC) to Fredericton, NB (CYFC) was taxiing to position for an immediate departure and a Moncton Flight College Beech C90A (C-GDFF) from Fredericton, NB (CYFC) to Fredericton, NB (CYFC) was turning 2NM final for Runway 33. The tower controller attempted to call both aircraft, with no response. The tower controller then issued the flashing red light signal with the light gun to C-GDFF, to indicate that the aerodrome was unsafe and to indicate to the aircraft to pull up and conduct a go-around. C-GDFF pulled up at 200ft and conducted a missed approach at 1951Z. Frequency 119.0 MHz was serviceable at 1951Z, after a 1 minute outage.

A European Air Transport Airbus A330-243 (DALMD/BCS955) from Covington/Cincinnati, KY (KCVG) to Milan/Malpensa, Italy (LIMC) requested WWA FL400 via the controller-pilot data link communications (CPDLC). The controller verbally told the aircraft to "expect higher" from Gander (QX) in 05 minutes. The aircraft "rogered" and reported its level to be FL400. Safety was not jeopardized and separation was not lost.