An Air Transat Airbus A330-243 (TSC663) from Toussaint Louverture, Haiti (MTPP) to Montreal/Pierre Elliott Trudeau, QC (CYUL) stopped on Runway 24L after landing short of the stop line for the Runway 06R holding bay. It switched to the apron management service frequency while still on the runway.

A Richcopter Inc. Cessna 150M (C-FTOD) from Drummondville, QC (CSC3) to Ottawa/Gatineau, QC (CYND) entered Class C airspace, southeast-bound, and came within 2 NM of the Runway 24 threshold before flying westward. C-FTOD flew in Class C airspace over a distance of 15 NM. Impact: a Cargair Cessna 172N (C-GIXX) from Montréal/Mirabel, QC (CYMX) to Montréal/Mirabel, QC (CYMX) was instructed to come to a complete stop on Runway 06 and wait on the runway.

Aviation Incident Report #17173: An Exact Air Beech 100 (C-FTYZ) from Quebec/Jean Lesage, QC (CYQB) to Quebec/Jean Lesage, QC (CYQB), with en route stops at Chibougamau/Chapais, QC (CYMT) and Kuujjuarapik, QC (CYGW), landed at CYGW and did not request "prior permission required" (PPR) authorization, as required by NOTAM.

The flight plan for an Aviation MH Inc. Beech C-23 (C-FCIT) from Rivière-du-Loup, QC (CYRI), to Rivière-du-Loup, QC (CYRI) was filed for Rimouski, QC (CYXK) which was the last stop, rather than CYRI, which was the return to the point of departure.

Aviation Incident Report #17135: An American corporately registered Morane Saulnier MS760B (N760X) from Sept-Îles, QC (CYZV) to Iqaluit, NU (CYFB), with an en route stop at Kuujjuaq, QC (CYVP), landed at CYVP and did not request for "prior permission required" (PPR) authorization, as required by NOTAM.
UPDATE: Duplicate AIRA 17265 deleted after cross-referencing the information.

Aviation Incident Report #17134: An American corporately registered Textron Aviation Inc. 172S (N326PL) from Goose Bay, NL (CYYR) to Iqaluit, NU (CYFB), with an en route stop at Kuujjuaq, QC (CYVP), landed at CYVP and did not request "prior permission required" (PPR) authorization, as required by NOTAM.

Aviation Incident Report #17112: An American corporately registered Textron Aviation Inc. 172S (N326PL) from Goose Bay, NL (CYYR) to Iqaluit, NU (CYFB), with an en route stop at Kuujjuaq, QC (CYVP), arrived at CYVP for fuelling and did not request to land/fuel in accordance with NOTAM requiring "prior permission required" (PPR) flight authorizations.
UPDATE: Duplicate Aviation Incident Report #17134: An American corporately registered Textron Aviation Inc. 172S (N326PL) from Goose Bay, NL (CYYR) to Iqaluit, NU (CYFB), with an en route stop at Kuujjuaq, QC (CYVP), landed at CYVP and did not request "prior permission required" (PPR) authorization, as required by NOTAM. (Duplicate CADORS 2021Q2954 deleted after information merge)

Aviation Incident Report #17076: An American, corporately registered Cessna 525 (N621JA) from Winnipeg/James Armstrong Richardson, MB (CYWG) to Keflavik, Iceland (BIKF), with an en route stop at Kuujjuaq, QC (CYVP), landed at CYVP without "prior permission required" (PPR) authorization, as per NOTAM requiring PPR flight authorizations.

A tow vehicle (SER662+1) crossed Runway 24L from Lima to A3 and stopped on the wrong side of the hold short line. An Air Canada Airbus A330-300 (ACA926) from Montréal/Pierre-Elliott-Trudeau, QC (CYUL) to Cancun, Mexico (MMUN) was cleared to depart from Runway 24L before SER662+1 moved back to the other side of the hold short line.

A privately registered Piper PA-28-140 from Joliette, QC (CSG3) to Joliette, QC (CSG3) flew in the Montreal terminal’s Class C airspace to 2,700 ft without authorization. Impact: an Air Canada Airbus A330-300 (ACA901) from Fort Lauderdale, FL (KFLL) to Montreal/Pierre Elliott Trudeau Intl., QC (CYUL) that was descending to 3,000 ft was instructed to stop its descent at 4,000 ft.

A static target observed on the radar at the Mirabel Airbus facility with a maximum altitude of 3,700 feet without prior coordination. Target stopped displaying at 1300Z. Terminal was informed and a Chrono Jet Inc. de Havilland DHC-8-101 (MBK370) on final for Runway 24 was informed of the nature of the radar target. No other known impact on operations.

An emergency locator transmitter (ELT) signal was heard for about 10 seconds. A Pascan Saab 340B (C-GRDU/PSC582) from Îles-de-la-Madeleine, QC (CYGR) to Québec/Jean-Lesage, QC (CYQB) on the ground at Îles-de-la-Madeleine, QC (CYGR), confirmed resetting its ELT and the signal stopped immediately.

A service vehicle drove across Taxiway A4 without authorization and did not stop for the red light. The airport duty manager was notified via the apron management service. No impact on operations.

At Montreal/Pierre Elliott Trudeau, QC (CYUL), the air position communication system stopped functioning. The back-up radio had to be used, as there was an aircraft on the runway and arrivals. The position was moved onto another console. No impact on operations.

A signal was heard on 121.5 MHz. An Acer Cold War Museum Aero L-29 Delfin (C-GGRY) from Ottawa/Gatineau, QC (CYND) to Ottawa/Gatineau, QC (CYND) reported that the signal was probably coming from them. C-GGRY landed at 1602Z and the signal stopped around 1606Z. Joint Rescue Coordination Centre (JRCC) Trenton and Area Control Centre (ACC) Montreal (YUL) were notified.

A Cargair Cessna 172N (C-GYMA) from Montreal/St-Hubert, QC (CYHU) to Montreal/St-Hubert, QC (CYHU) landed on Runway 06R and reported a blown tire and was unable to exit the runway. The aircraft was towed away; the runway was inspected and reopened at 1639Z. Impact: some aicraft in the circuit had to come to a complete stop and some departures were delayed.

A loud and clear emergency locator transmitter (ELT) signal was reported by several high level aircraft in the Montreal/Pierre Elliott Trudeau, QC (CYUL) area. Signal stopped at 1924Z. Source: accidental ELT activation by a privately registered Piper PA-28-161. Joint Rescue Coordination Center (JRCC) Trenton notified.

A Pascan Saab 340B (PSC478) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Montreal/St-Hubert, QC (CYHU) was on final for 24R for a full stop. The air traffic controller (ATC) passed information regarding traffic on base for Runway 24L to PSC478, and the aircraft acknowledged receipt. The aircraft landed and, once transferred to the ground control frequency, explained that it had received a traffic alert and collision avoidance system (TCAS) resolution advisory (RA), but did not execute any avoidance manoeuvre.

An ultralight, privately registered Jabiru Calypso 2200 was on a VFR flight plan from Chicoutimi/St-Honoré, QC (CYRC) to a final destination of Tête-à-la-Baleine, QC (CTB6), with a stop at Sept-Îles, QC (CYZV). The pilot initially planned to join the right downwind for Runway 27. About 5 miles to the west, the pilot requested the winds and advised that they wanted to use Runway 09 because their engine was intermittent. The aircraft confirmed it was declaring an emergency. While the flight service station (FSS) was on the phone with 911, the pilot advised that their engine had failed and that they were landing at the beach. The aircrafts radar target was observed to descend and disappear 1 mile south of the airport. Shortly thereafter, the pilot advised they had landed and were alright.

Aviation Incident Report #16988: An Air Inuit de Havilland DHC-8-314 (C-FAID) from Akulivik, QC (CYKO) to La Grande-Rivière, QC (CYGL), with an en route stop at Puvirnituq, QC (CYPX), left cargo on the tarmac at CYKO.

TSB Report #A21Q0010: C-GNZS, an Airbus Helicopters AS355N Twinstar operated by Canadian Helicopters Limited, was on a visual flight rules flight from Sept-Îles, QC (CYZV) airport to the IOC helipad, located 3 nautical miles to the west. While hovering before landing (about 2 m), engine number 2 (Turbomeca Arrius 1A) stopped. The aircraft landed safely and there were no injuries or damage.

A loud and clear emergency locator transmitter (ELT) signal was heard by several aircraft operating at various altitudes. Signal stopped at 1107Z. Source: a MDG Aviation Inc. Robinson R44 II (C-GNQM). Joint Rescue Coordination Centre (JRCC) Trenton advised.

Aviation Incident Report #16984: An Exact Air Beech A100 (C-FDOS) from Kuujjuaq, QC (CYVP) to Kuujjuaq, QC (CYVP), with an en route stop at Umiujaq, QC (CYMU), landed at CYVP at 2110Z. A "prior permission required" (PPR) was not granted for this flight as per the NOTAM requiring PPR flight authorizations. (Reference AIRA 16984 / CADORS 2021Q1734)

Aviation Incident Report #16984: An Exact Air Beech A100 (C-FDOS) from Quebec/Jean Lesage, QC (CYQB) to Kuujjuaq, QC (CYVP), with an en route stop at Umiujaq, QC (CYMU), landed at CYVP at 1725Z. A "prior permission required" (PPR) was not granted for this flight as per the NOTAM requiring PPR flight authorizations. (Reference AIRA 16984 / CADORS 2021Q1742)

A privately registered American Aviation AA-1 from Montreal/St-Hubert, QC (CYHU) to Montreal/St-Hubert, QC (CYHU) turned right onto Runway 28 after receiving an instruction to taxi to the left on Runway 10. The aircraft was instructed to stop and turn around as it passed the hold lines for Runway 06L. Impact: a Cargair Cessna 152 (C-GBJU) from Montreal/St-Hubert, QC (CYHU) to Montreal/St-Hubert, QC (CYHU), on short final for Runway 24R, received an instruction to conduct a pull-up. No other impact on operations.

A Precision West AG Corp. Ayres S2R-T34 (C-GERO) from Gaspé/Michel-Pouliot, QC (CYGP) to Gaspé/Michel-Pouliot, QC (CYGP) suffered an engine failure on final for Runway 10 and crashed more than 200 feet from the threshold of Runway 10. Following the crash, there was a fuel or spray product (insecticide) leak. Emergency services and airport manager (APM) advised. Impact: a Precision West AG Corp. Thrush Aircraft S2R-T34 (C-FELO) from Gaspé/Michel-Pouliot, QC (CYGP) to Gaspé/Michel-Pouliot, QC (CYGP); a Mitchinson Flying Service Cessna 310R (C-GFXA) on a flight to Gaspé/Michel-Pouliot, QC (CYGP); a Precision West AG Corp. Ayres S2R-T34 (C-GURO) on a flight to Gaspé/Michel-Pouliot, QC (CYGP); a Precision West AG Corp. Thrush Aircraft S2R-T34 (C-FDLO) on a flight to Gaspé/Michel-Pouliot, QC (CYGP); and a Precision West AG Corp. Thrush Aircraft S2R-T34 (C-GESO) on a flight to Gaspé/Michel-Pouliot, QC (CYGP) experienced landing delays. Runway 10/28 was closed from 1155Z to 1500Z. The National Operations Centre (NOC), the Transportation Safety Board of Canada (TSB) and the Aviation Operations Centre (AVOPS) were notified.
UPDATE: TSB Report #A21Q0046: C-GERO, a Thrush Aircraft S2R-T34 operated by Precision West AG corp., was conducting an aerial application flight from and to Gaspé, QC (CYGP) with one pilot on board. On short final, with the engine at idle, the pilot moved the power lever to apply more power, but there was no response from the engine. A high ITT warning quickly followed. The aircraft could not reach the runway and struck the ground approximately 200 feet short of the threshold of Runway 10, striking the perimeter fence before coming to a complete stop. The Emergency Locator Transmitter (ELT) was triggered. The pilot secured the airplane and was not injured.

A vehicle (ASI607) was seen stopped at the corner of Taxiways D and J at Montreal/Mirabel, QC (CYMX) without authorization.

A loud and clear emergency locator transmitter (ELT) signal was heard by several aircraft operating at various altitudes. Signal stopped at 2108Z. Source: a privately registered Cessna 172G on the ground at St-Mathieu-de-Beloeil, QC (CSB3). Joint Rescue Coordination Centre (JRCC) Trenton notified.

An FAI Rent-A-Jet Learjet 60 (DCFAZ/IFA1171) from Boston, MA (KBOS) to Reykjavik/Keflavik, Iceland (BIKF), en route, required an unscheduled fuel stop in Goose Bay, NL (CYYR). No emergency or impact to operations.

An Academie Aeronautique Cessna 172N (C-GYBV) from Montreal/Mirabel, QC (CYMX) to Montreal/Mirabel, QC (CYMX) had to conduct a stop-and-go instead of a touch-and-go on Runway 06 following the crossing of a pig on the runway. Airport duty manager (ADM) advised. No other impact on operations. (Duplicate AOR 274531-V1 deleted after information merge)

A privately registered Cessna A185F made an emergency call on 121.5 MHz. The aircraft advised of an engine failure and indicated that it would attempt to land at Lac-Chicobi at 2141Z. The aircraft was 4NM North of Lac-Chicobi. The aircraft broadcast the phone number of a contact who would be attending the rescue. A loss of communication occurred a few minutes after the initial contact. 3 souls on board were uninjured. The aircraft is reported as a total loss. The Joint Rescue Coordination Centre (JRCC) Trenton was advised. (Duplicate record AOR 274532-V1 deleted after information merge; additional information from Aviation Incident Report (AIRA) incorporated into narrative summary)
UPDATE: TSB Report #A21Q0038: A Cessna A185F was on a visual flight rules flight from Lac Plamondon, QC, to Lac Preissac, QC, with 1 pilot and 2 passengers on board. While the aircraft was in cruising flight at 7000 feet, the engine stopped suddenly and the pilot tried to head to Lac-Chicobi, QC. While the aircraft was at an altitude of 3000 feet, it quickly began losing altitude, and the pilot attempted a landing in marshland located approximately 4 NM north of Lac-Chicobi. The aircraft was damaged but did not flip over, and all the occupants were uninjured. The post-landing inspection showed that the right wing’s fuel tank cap was missing and that the tanks were empty. Afterwards, the engine was able to be started and appeared to function normally.

After landing, a privately registered Cirrus SR20 from Montreal/Mirabel, QC (CYMX) to Montreal/St-Hubert, QC (CYHU) exited Runway 06L onto Taxiway Kilo. Its engine stopped while it was still in the protected area of the runway. The aircraft was towed a few minutes later. Impact on operations: two aircraft landed on Runway 06R and departures were delayed.

A BSA Aviation Inc. Piper PA-34-200T (C-GDRD) from Bromont, QC (CZBM) to Bromont, QC (CZBM) landed on Runway 29 at Quebec/Jean Lesage, QC (CYQB) without its nose landing gear being deployed. The extent of the damage is unknown. No injuries, no deaths. Impact: Runway 11/29 was closed. The National Operations Centre (NOC), the Transportation Safety Board of Canada (TSB) and the Aviation Operations Centre (AVOPS) were notified.
UPDATE: TSB Report #A21Q0039: A privately registered Piper PA34-200T (C-GDRD) was on a visual flight rules flight from the Bromont/Roland-Désourdy, QC (CZBM) airport. On approach to land, when the landing gear was selected for the extended position, the pilot received an abnormal indication noting that the front wheel was not locked. The aircraft declared an emergency and diverted to Québec/Jean-Lesage, QC (CYQB). A gravity landing gear extension procedure was tried but was unsuccessful, and the aircraft landed on Runway 29 at CYQB with an unlocked front wheel. The aircraft remained on the centreline of the runway until it came to a complete stop. The propellers and the nose wheel fairing were damaged. The pilot, the sole occupant of the aircraft, was not injured. A mechanical verification after the flight enabled identification of a bolt installed contrary to manufacturer’s recommendations.

After landing on Runway 24, while taxiing on Taxiway B4, an Academie Aeronautique Cessna 172N (C-GVKP) from Montreal/Mirabel, QC (CYMX) to Montreal/Mirabel, QC (CYMX) advised that it had a flat tire and had stopped on Taxiway B4. The aircraft taxied under its own power towards Mirajet at 1621Z. No debris found following an inspection of Runway 24. Impact: detour given to an aircraft to bypass Taxiway B4. No other impact on operations.

Several aircraft reported an emergency locator transmitter (ELT) signal, between 1444Z and 1446Z, near Les Escoumins, QC. During the call to the Joint Rescue Coordination Center (JRCC) Halifax, the JRCC advised that a Heli/Express Inc. Aerospatiale AS 350 B-2 (C-GHEX) had crashed. Emergency services had not been deployed. No injuries. No service provided by NAV CANADA. No impact on operations.
UPDATE: TSB Report #A21Q0024: C-GHEX, an Aerospatiale AS350 B2 helicopter operated by Heli-Express Inc., was on a slinging flight along a high voltage line 1.7NM north of Les Escoumins, QC. The tail rotor gearbox and tail rotor separated from the helicopter while in flight. The pilot released the sling load and proceeded to a dirt runway not far from their position for an emergency landing. During the approach, there was a deceleration and the helicopter began to turn on itself towards the left. The pilot was unable to regain control of the helicopter and decided to cut off the fuel supply to stop the rotational movement and attempt a landing without an engine. The aircraft struck the ground hard in an upright position, without tipping over to the side. The emergency locator transmitter was activated. A second helicopter touched down shortly thereafter with rescuers and the injured pilot was transported to hospital.

The Montreal/Pierre Elliott Trudeau, QC (CYUL) control tower was evacuated due to a fire alarm. The controllers moved to the evacuation site. The tower was reopened around 1840Z. Impact: Tier 2 ground stop procedure in effect from 1812Z to 1830Z.

Aviation Incident Report #16986: At 1818Z, a Chrono Aviation Pilatus PC-12/47 (C-FYMN) from Quebec/Jean Lesage, QC (CYQB) to Quebec/Jean Lesage, QC (CYQB), with en route stops at Quaqtaq, QC (CYHA) and Kuujjuaq, QC (CYVP), landed at CYVP without adhering to the "prior permission required" (PPR) protocol, as per the COVID-19 flight restriction NOTAM requiring PPR flight authorizations.

Aviation Incident Report #16970: A Propair Inc. Beech A100 (C-GJLJ/PRO4650) from Val-dOr, QC (CYVO) to Bagotville, QC (CYBG) checked in at 14NM for the area navigation (RNAV) Runway 11 approach. Two minutes later, a Pascan British Aerospace Jetstream 3212 (C-GPPS/PSC837) from Bagotville, QC (CYBG) to Baie-Comeau, QC (CYBC) called to taxi for a departure from Runway 29, and was told to stand by. One minute later, PSC837 was given its taxi route, which included a "hold short of Runway 29" instruction. PSC837 read back the hold short restriction. At 5.4NM from the threshold, PRO4650 was provided with its landing instruction. Two minutes later, the Ground Controller noticed that PSC837 was rapidly approaching Runway 29. PSC837 confirmed it was clear of Runway 29, but proceeded to continue towards the active runway while PRO4650 was 1.5NM from the threshold. The Ground Controller told the aircraft to stop as it had arrived at the intersection.

After having received the instruction to cross the threshold of Runway 27 at Sept-Îles, QC (CYZV) without delay and to proceed via Delta and Charlie, a vehicle (ST20) came to a stop on Runway 09/27. Air traffic control (ATC) re-issued the instruction for the vehicle to cross the threshold without delay, and ST20 exited the runway. No impact on operations.

At 1033Z, a Jazz de Havilland DHC-8-402 (JZA8701) from Quebec/Jean Lesage, QC (CYQB) to Montreal/Pierre Elliott Trudeau, QC (CYUL) initiated a missed approach for Runway 06R due to an indication of a landing gear problem. At 1104Z, JZA8701 declared a "PAN PAN" and emergency services were deployed. The aircraft landed safely at 1122Z and left the runway at 1203Z. No impact on operations.
UPDATE: TSB Report #A21Q0018: C-GGOY, a Dash 8-402 operated by Jazz Aviation under the callsign JZA8701, was on an instrument flight rules flight from Quebec/Jean Lesage, QC (CYQB) to Montreal/Pierre Elliott Trudeau, QC (CYUL) with 3 crew members and 34 passengers on board. While the aircraft was on final approach for Runway 06R at CYUL, the "Left Gear Unsafe" light illuminated when the landing gear was selected for the extended position. The crew ascended and an emergency (PAN PAN) was declared. The Quick Reference Handbook (QRH) checklist was completed and the light remained on. The aircraft touched down on Runway 06R safely and the aircraft came to a stop. The landing gear was secured and the aircraft was towed to the boarding gate.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. During approach, the flight crew received a "left" red Main Landing Gear (MLG) unsafe warning indication. The Quick Reference Handbook (QRH) was reviewed and an alternate gear extension was performed, with the same result. The alternate gear extension verification light was also indicating an unsafe condition. An emergency was declared. After burning off excess fuel and repositioning passengers in the cabin, the aircraft landed without further incident, stopping on the runway. Maintenance confirmed that the left MLG was not in a locked position. The gear was physically moved to a locked position and secured with a ground lock safety pin. The aircraft taxied to its assigned gate, where passengers deplaned. Following troubleshooting, the left MLG downlock actuator was replaced and the system tested serviceable. The aircraft was returned to service following a successful test flight. Service Difficulty Report No. 20210414003 was submitted

In the circuit at Montreal/Mirabel, QC (CYMX), a Cargair Ltee. Cessna 172N (C-GIXH) advised that it would be conducting a complete stop due to a low oil pressure indication. No emergency. The aircraft landed at 0040Z without incident. No impact on operations.

A Cargair Ltee Cessna 152 (C-FOPC) from Montreal/St-Hubert, QC (CYHU) to Montreal/St-Hubert, QC (CYHU) called the flight service station (FSS) via cell phone to report that it had a radio and transponder failure. The aircraft reported 10NM southeast, inbound with "no radio" (NORDO) for a full stop. An airport advisory was provided, which included information about traffic in the circuit. Other traffic, including a Government of Canada, Department of Transport Bell 412 (CTG942) from Ottawa/Macdonald-Cartier, ON (CYOW) to Ottawa/Macdonald-Cartier, ON (CYOW) and a Rockcliffe Flying Club Cessna 172M (C-GMME) from Ottawa/Rockcliffe, ON (CYRO) to Ottawa/Rockcliffe, ON (CYRO), were advised as well of the inbound NORDO aircraft. C-FOPC landed on Runway 27 without further incident at 1545Z.

The Sureté du Québec reported an aircraft crash at Barron Lake, in the Gore region. The aircraft was a privately registered, amateur-built Wagaero Wagabond.
UPDATE: TSB Report #A21Q0007: A privately registered, amateur-built Wag-A-Bond aircraft was on a visual flight rules flight from Lake Barron (QC) to the Lachute, QC (CSE4) airport, located 10.5 nautical miles to the southwest. Shortly after take-off, the aircraft turned to the left and crashed into the icy surface of the lake, coming to a stop vertically. The emergency locator transmitter (ELT) activated. The pilot, alone on board, suffered fatal injuries.
UPDATE: Aviation Incident Report #17001: Upon take-off, a privately registered, amateur-built Wag-A-Bond, in the climb, nosed down and crashed into the lake. Rescue services were deployed to the site, along with the Transportation Safety Board of Canada (TSB). The aircraft had been under registration for a change of ownership since January 12, 2021. The aircraft was a total loss.

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.

Aviation Incident Report #16948: With the wind favoring Runway 02 at Montreal/Saint-Lazare, QC (CST3), with a slight crosswind, two aircraft, including a privately registered American Aviation AA-5, were in the circuit for Runway 02. A 3rd aircraft, a privately registered Cessna 150F, was approaching the aerodrome and indicated that it was going to join the circuit for Runway 20. The two aircraft in the circuit had advised that the wind favored Runway 02. The Cessna 150F ignored the calls and continued towards Runway 20. The American Aviation AA-5, on final for Runway 02, had to conduct a go-around due to the presence of the Cessna 150F on an initial climb from Runway 20, following a stop-and-go.

The community aerodrome radio stations (CARS) of CYKO, CYZG and CYTQ did not provide services as published on February 12, 2021. NOTAM issued; impact on operations unknown.
Aviation Incident Report #16979: On February 12, 2021, the CYZG community aerodrome radio station (CARS) offered the weather observation service until 1700Z, then stopped. At 2000Z, the Kativik Regional Government (KRG) was contacted to have the CARS weather observation service resume and to have information on the runway condition, as there was a request for an urgent MEDEVAC flight. At 2200Z, there was still no information regarding the weather or the runway condition (or information that there was still a blizzard).

The emergency locator transmitter (ELT) of a Foxair Héliservice/Hélico Pro Inc. Agusta A109AII (C-FFXX) was accidentally activated. The ELT signal stopped at 2057Z. The Joint Rescue Coordination Centre (JRCC) Trenton (TR) was advised.

A privately registered Mooney M20F from Langley Regional, BC (CYNJ) to Langley Regional, BC (CYNJ) landed Runway 01 and was instructed to exit Taxiway B. The aircraft stopped on Taxiway B on the runway side of the hold short line. A Skyquest Aviation Cessna 172M (C-GCKA) from Langley Regional, BC (CYNJ) to Langley Regional, BC (CYNJ) was told to pull up and go around.

A Canadian Aviation College Cessna 172L (C-FTWE) from Pitt Meadows, BC (CYPK) to Pitt Meadows, BC (CYPK) was instructed to line-up on Runway 36 while a Truck (TRUCK85) was crossing the departure end of the runway. C-FTWE was observed commencing forward and was instructed to stop.

The pilot of a Canadian Flight Centre Inc. Cessna 172P (C-GTAE) from Pitt Meadows, BC (CYPK) to Pitt Meadows, BC (CYPK) advised air traffic control (ATC) of an engine failure while climbing on the downwind leg for Runway 26L, eastbound. ATC moved 2 aircraft ahead to allow an immediate landing on Runway 26L. The aircraft landed and came to a stop on Runway 26L without further incident, but the runway was obstructed until the aircraft could be towed clear.