A VFR aircraft, which was not in communication with air traffic control (ATC), flew between 2500ft and 4000ft in the final approach zone for Runways 06L and 06R at Montreal/Pierre Elliott Trudeau, QC (CYUL). Impact: a Jazz Embraer ERJ 170-200 SU (JZA7133) from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL); a Jazz Embraer ERJ 170-200 SU (JZA7596) from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL); a Cameron Air Service Pilatus PC-12/47E (C-GECT) from Toronto/Billy Bishop, ON (CYTZ), to Montreal/Pierre Elliott Trudeau, QC (CYUL); and an Air Wisconsin Airlines Bombardier CL-600-2B19 (AWI931) from Washington-Dulles, VA (KIAD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) had to be guided to avoid conflict with the VFR aircraft.

The following aircraft filed flight plans which infringed upon restricted airspace CYR666: A United Airlines Boeing 787-8 (UAL988) from Frankfurt, Germany (EDDF) to Washington Dulles, VA (KIAD); a Global Jet Luxembourg Gulfstream G650 (SVW44LF) from Milan Linate, Italy (LIML) to Newark, NJ (KEWR); a United Airlines Boeing 787-8 (UAL107) from Munich, Germany (EDDM) to Washington Dulles, VA (KIAD); a United Airlines Boeing 767-300 (UAL135) from Zurich, Switzerland (LSZH) to Newark, NJ (KEWR); a United Airlines Boeing 787-10 (UAL2800) from Frankfurt, Germany (EDDF) to Atlanta/Hartsfield–Jackson, GA (KATL); a United Airlines Boeing 777-300 (UAL15) from London/Heathrow, United Kingdom (EGLL) to Newark, NJ (KEWR); an Air Canada Boeing 787-9 (ACA845) from Frankfurt, Germany (EDDF) to Montreal/Pierre Elliott Trudeau, QC (CYUL); a United Airlines Boeing 767-300 (UAL53) from Zurich, Switzerland (LSZH) to Washington Dulles, VA (KIAD); and a Qatar Airways Boeing 777-300 (QTR7HK) from Doha/Hamad, Qatar (OTHH) to New York/John F. Kennedy, NY (KJFK).

An Icelandair Boeing 757-200 (ICEB2) from Washington Dulles, VA (KIAD) to Reykjavik/Keflavik, Iceland (BIKF) was observed off of the cleared route and proceeding towards YBC. The route known to the air traffic service (ATS) unit was YBG. No impact on operations.

A Saudi Arabian Airlines Corporation Boeing 777-300 (HZAK42/SVA035) from Jeddah, Saudi Arabia (OEJN) to Washington-Dulles, VA (KIAD) was observed to be off course of the cleared route and proceeding direct YRI SYR. The route known to the air traffic service (ATS) unit was YRI KB78A EMI. 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.

A China Eastern Airlines Boeing 777-300 (B7868/CES7171) from Shanghai/Pudong, China (ZSPD) to Toronto/Lester B. Pearson, ON (CYYZ) was instructed to conduct a go-around for Runway 24L due to traffic on the runway, a Jazz Bombardier CL-600-2D24 (C-GJUZ/JZA7711) from Toronto/Lester B. Pearson, ON (CYYZ) to Washington-Dulles, VA (KIAD), that was slow to depart. CES7171 landed on Runway 24L at 1807Z without further incident. No operational impact.

A Glencore Canada Corporation Boeing 737-2S2C (C-GXNR/RAG200) from Quebec/Jean Lesage, QC (CYQB) to Toronto/Lester B. Pearson, ON (CYYZ) reported a bird strike when landing on Runway 05. A Jazz Bombardier CL-600-2D24 (C-FCJZ/JZA7709) from Washington-Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ) was instructed to conduct a go-around for Runway 05. A vehicle (Birdman) removed a barn swallow from Runway 05. JZA7709 landed on Runway 05 at 2203Z without further incident. No other operational impact.

A Jazz Bombardier CL-600-2D24 (C-FTJZ/JZA7711) from Toronto/Lester B. Pearson, ON (CYYZ) to Washington/Dulles, VA (KIAD) reported a possible bird strike on rotation, departing from Runway 24L. No foreign object debris (FOD) was found. No operational impact.

A Jazz Bombardier CL-600-2D24 (C-GFJZ/JZA7707) from Washington/Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ) reported a drone around 7000ft, 3NM Southeast (SE) of Toronto/Billy Bishop, ON (CYTZ) at 1514Z. No impact to operations.

A Jazz de Havilland DHC-8-311 (C-GEWQ/JZA8322) from Sault Ste. Marie, ON (CYAM) to Toronto/Lester B. Pearson, ON (CYYZ), on approach for Runway 24L, was instructed to conduct a go-around due to an Air Wisconsin Airlines Bombardier CL-600-2B19 (N454AW/AWI3735) from Toronto/Lester B. Pearson, ON (CYYZ) to Washington/Dulles, VA (KIAD) passing the hold short line (HS9) for Runway 24L on Taxiway D7. JZA8322 landed without incident at 1914Z. No operational impact.

An American, corporately registered Gulfstream G-IV (N889CG) from Toronto/Lester B. Pearson, ON (CYYZ) to Washington-Dulles, VA (KIAD) requested an immediate return to CYYZ shortly after departure, due to an aircraft equipment issue. No emergency was declared. N889CG landed on Runway 23 at 0154Z without further incident (WOFI). No operational impact.

A United Airlines Boeing 787-10 (UAL3010) from Washington-Dulles, VA (KIAD) to Frankfurt, Germany (EDDF) declared a medical emergency and diverted to Gander, NL (CYQX). The aircraft landed safely at 0111Z. No traffic. No impact on operations. No assistance required.
UPDATE: Duplicate AOR 277336-V1 / CADORS 2021A0520 deleted after information merge.

The New York Oceanic Area Control Centre (NYOAC) advised that a Royal Air Maroc Boeing 787-9 (RAM218W) from Casablanca, Morocco (GMMN) to Washington/Dulles, VA (KIAD) was re-routing to Boston, MA (KBOS) due to a medical emergency. After 5 minutes of identifying and talking with the aircraft, the medical emergency was cancelled and the aircraft continued to KIAD. No loss in service and no other issues.

An Air France Boeing 777-300 (AFR055) from Washington/Dulles, VA (KIAD) to Paris/Charles de Gaulle, France (LFPG) reported a sick crew member and requested to return to the departure airport. A doctor was on board. No emergency or assistance required. No impact on operations and the aircraft exited Moncton (QM) airspace at 0200Z.

The Moncton area control centre (ACC) reported that a United Airlines Boeing 787-8 (N28912/UAL951) from Brussels, Belgium (EBBR) to Washington-Dulles, VA (KIAD) could receive calls, but was unable to transmit. Communication was achieved through the controller-pilot data link communications (CPDLC), and then later "on guard", which worked. Safety and separation were assured, no impact on operations.

A Saudi Arabian Airlines Boeing 777-300 (SVA038) from Washington-Dulles, VA (KIAD) to Riyadh/King Khalid, Saudi Arabia (OERK) reported severe turbulence at FL330. The aircraft did not change its altitude. No impact on operations.

Severe turbulence was reported by three aircraft: A Turkish Airlines Boeing 777-300 (THY1) from Istanbul, Turkey (LTFM) to New York/John F. Kennedy, NY (KJFK); a Turkish Airlines Boeing 777-300 (THY7) from Istanbul, Turkey (LTFM) to Washington/Dulles, VA (KIAD); and an Azur Air Boeing 767-300 (AZV536) from Cayo Coco, Cuba (MUCC) to Moscow/Vnukovo, Russia (UUWW). The flight information centre (FIC) was advised. No impact on operations.

A United Airlines Boeing 777-222 (N217UA/UAL951) from Brussels, Belgium (EBBR) to Washington-Dulles, VA (KIAD) declared a medical emergency due to an ill passenger on board and changed its destination from KIAD to Boston/Logan, MA (KBOS). Information was transmitted to the Boston air traffic services (ATS) unit. No impact on operations.

At takeoff from Runway 24L, a Commutair/United Express Embraer EMB-145XR (UCA4959) from Montreal/Trudeau, QC (CYUL) to Washington-Dulles, VA (KIAD) turned left at 2 000 ft to get out of the wake turbulence of an Air China Ltd. Boeing 787-9 (B7832/CCA880) from Montreal/Trudeau, QC (CYUL) to Beijing, China (ZBAA). No impact on operations and no separation problem.

An EgyptAir Airbus BD-500-1A11 A220-300 (MSR3330) from Montreal/Mirabel, QC (CYMX) to Ostend, Belgium (EBOS) departed assigned altitude without air traffic control (ATC) clearance. Aircraft reported system failure. No loss of separation with a United Airlines Boeing 777-200 (UAL107) from Munich, Germany (EDMM) to Washington/Dulles, VA (KIAD) or impact to operations.

An Ethiopian Airlines Boeing 777-300 (ETH500) from Dublin, Ireland (EIDW) to Washington/Dulles Intl, VA (KIAD) received and read back clearance to go directly to (ALB) Albany, but turned too far to the left off the path. Approximately 10 minutes later, ETH500 was questioned on its route and corrected the heading to go directly to Albany. No impact on operations.

A Commutair/United Express Embraer EMB-145XR (UCA5025) from Washington/Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ) was instructed to conduct a go-around for Runway 06L to ensure separation from a departing aircraft. UCA5025 landed on Runway 06L at 1647Z without further incident. No operational impact.

A Jazz Bombardier CL-600-2B19 (C-GMJA/JZA7913) from Washington-Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ) landed on Runway 24R and set off its emergency locator transmitter (ELT). The Joint Rescue Coordination Centre (JRCC) Trenton was notified and a maintenance crew was dispatched to turn the ELT off. No impact to operations.

A Sky Regional Airlines Embraer ERJ 170-200 SU (C-FEJY/SKV7559) from Washington-Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ) was instructed by the CYYZ tower to conduct a go-around due to the previous arrival, a LOT Polish Airlines Boeing 787-8 (SPLRC/LOT1045) from Warsaw, Poland (EPWA) to Toronto/Lester B. Pearson, ON (CYYZ), being slow to vacate the runway. SKV7559 landed at 2329Z without further incident (WOFI). No operational impact.

A Commutair/United Express Embraer EMB-145 (UCA5015) on a flight from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Washington/Dulles, VA (KIAD) turned direct PSB at DUSOM.

A Sky Regional Airlines Inc. Embraer ERJ 170-200 SU (SKV7711) from Washington/Dulles, VA (KIAD) to Toronto/Lester. B Pearson, ON (CYYZ) experienced a wake encounter behind an Air Canada Embraer ERJ 190-100 IGW (ACA969) from Great Exuma, Bahamas (MYEF) to Toronto/Lester. B Pearson, ON (CYYZ). No operational impact.

Wake encounter experienced by a Mesa Airlines Bombardier CL-600-2C10 (ASH6196) from Washington-Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ). The other aircraft was a WestJet Boeing 737-800 (WJA2625) from Holguin/Frank Pais, Cuba (MUHG) to Toronto/Lester B. Pearson, ON (CYYZ). No operational impact.

A Sky Regional Airlines Embraer ERJ 170-200 SU (SKV771) from Washington-Dulles, VA (KIAD) to Toronto/Lester B. Pearson, ON (CYYZ) reported wake turbulence behind a Turkish Airlines Inc. Boeing 777-300 (THY17W) from Istanbul, Turkey (LTFM) to Toronto/Lester B. Pearson, ON (CYYZ) on base for Runway 06L at CYYZ. SKV771 landed safely. No further impact.

South ground issued taxi instructions to a Commutair/United Express Embraer EMB-145XR (UCA4949) from Toronto/Lester B. Pearson, ON (CYYZ) to Washington-Dulles, VA (KIAD) while the aircraft was still on a deice pad and control transfer had not yet been affected.

Aviation Incident Report #16525: A Commutair/United Express Embraer EMB-145XR (N12195/UCA4949) from Toronto/Lester B. Pearson, ON (CYYZ) to Washington Dulles, VA (KIAD) was deiced at the Central Deicing Facility (CDF) on Pad 3N. After deicing was complete, Iceman provided the post deice information, and advised the Flight Crew to contact Pad Control for taxi (exit) instructions. Pad Control observed the aircraft start to taxi with a taxi clearance and electronic message boards displaying "HOLD 131.175" with two RED lights. Pad Control was unable to contact the flight on the very high frequency (VHF) airway, and then contacted South Ground via hotline to see if they were speaking to the flight. South Ground was in contact with the flight and was asked to stop the aircraft and have the flight crew switch back to Pad Control frequency. Flight crew contacted South Ground and requested taxi instructions, rather than Pad Control as they were instructed to.

A Champlain Enterprises Embraer EMB-145XR (N11194/UCA4876) from Washington-Dulles, VA (KIAD) to Ottawa/Macdonald-Cartier, ON (CYOW) executed a missed approach on Runway 32, due to an unstable approach. No impact on operations.

After receiving approach clearance and being switched to the tower, a Mesa Airlines Bombardier CL-600-2C10 (ASH6042) from Washington-Dulles, VA (KIAD) to Ottawa/MacDonald-Cartier, ON (CYOW) never called the Tower nor responded to numerous calls. ASH6042 landed Runway 25, exited on Echo and taxied to its gate without talking to the Tower or Ground at all. No impact.

TSB Report #A20F0065: C-GCUL, a Canadian Utilities Dassault Falcon 7X, was conducting flight from Calgary Intl. (CYYC), AB to Washington Dulles Intl. (KIAD), DC. During approach shortly after being vectored for Runway 1C, Flight crew experienced a TCAS RA “Climb”. RA (resolution advisory) was actioned by flight crew and they advised ATC. Flight continued without further incident.

An Air India Boeing 787-8 (AIC103) from New Delhi/Indira Gandhi, India (VIDP) to Washington-Dulles, VA (KIAD) reported moderate to severe turbulence at FL400. The aircraft was descended and reported better conditions. Operations were not affected.

An Austrian Airlines AG Boeing 767 300 (AUA93) from Vienna, Austria (LOWW) to Washington-Dulles, VA (KIAD) declared a medical emergency and diverted to Halifax/Stanfield, NS (CYHZ). An ambulance was dispatched. No impact to operation.

A United Airlines Inc. Boeing 777-200 (UAL950) from Washington-Dulles, VA (KIAD) to Brussels, Belgium (EBBR) requested to turn around and return to KIAD due to a mechanical issue. No assistance required. No impact on operations or emergency declared.

At time 2202Z and just west of 50N050W, a British Airways Boeing 787-9 (GZBKD/BAW293) on a flight from Heathrow/London Intl, UK (EGLL) to Washington/Dulles, VA (KIAD) declared a PAN PAN due to a pressurization issue and requested descent from FL410 to FL350. The flight was recleared to FL340. BAW293 reported the situation good at FL340 and PAN PAN cancelled at 2215Z. Flight continued to its destination and exited the Gander Intl, NL (CYQX) flight information region (FIR) at 2248Z.
UPDATE TSB Report #A20A0006: G-ZBKD, an Boeing 787-900 operated by British Airways, was conducting flight BAW293 from London Heathrow Intl. (EGLL), UK to Washington Dulles Intl. (KIAD), VA. The aircraft dispatched with the right air conditioning pack inoperative in accordance with the MEL. During the cruise portion while at FL410, the left air conditioning pack failed, resulting in a PACK ALTITUDE LIMIT warning. The checklist required a descent to FL340. At 195 nm NE of St John’s International Airport, NL (CYYT), the crew requested FL340, however it was denied by ATC. The crew then declared a PAN-PAN due to the pressurization issue and a descent to FL340 was made. Once the aircraft reached FL340, the crew reported the situation was normal and cancelled the PAN-PAN and continued to destination without incident.

Severe turbulence reported by several aircraft including an Air France Boeing 777-300 (AFR054) on a flight from Paris/Charles de Gaulle, France (LFPG) to Washington/Dulles Intl, VA (KIAD).

Severe turbulence reported by several aircraft including a Qatar Airways Boeing 777-300 (QTR707) on a flight from Doha, Qatar (OTHH) to Washington/Dulles Intl, VA (KIAD).

En route, a United Airlines Boeing 787-9 (UAL807) from Washington/Dulles, VA (KIAD) to Beijing, China (ZBAA) reported a medical emergency on board (involving a passager) and asked to be vectored to KIAD. Coordination carried out. No impact.

An Embraer EMB-125XR (N12160/UCA4956) from Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) to Washington-Dulles Intl, DC (KIAD) rejected its takeoff due to an oil pressure problem indication.

A Jazz Bombardier CL-600-2B19 (C-GJZZ/JZA8172) on a flight from Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) to Washington-Dulles Intl, DC (KIAD) rejected two takeoffs due to an indication in the cockpit. The aircraft returned to the gate.

Although it had received and read back clearance to climb to FL230, a Jazz Bombardier CL-600-2B19 (C-GUJA/JZA8172) from Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) to Washington/Dulles Intl, DC (KIAD) called Boston, MA (KBOS) on climb to FL280. No impact.

A United Airlines Boeing 757-200 (UAL127) on a flight from Dublin, Ireland (EIDW) to Washington-Dulles Intl, VA (KIAD) request diversion to Bangor, ME (KBGR) due to a mechanical issue. No emergency or impact on operations.

An Aviation Starlink Learjet 45 (C-GMSY) from Montreal/Trudeau, QC (CYUL) to Montreal/Mirabel, QC (CYMX) lined up and was instructed to prepare itself immediately for takeoff on Runway 24L. C-GMSY taxied slowly. Impact: a Mesa Airlines Bombardier CL-600-2C10 (series 700) (N516LR/ASH6170) from Washington-Dulles, VA (KIAD) to Montreal/Trudeau, QC (CYUL) had to conduct a go-around.

While inbound for Runway 24R, an Endeavor Air Bombardier CL-600-2D24 (EDV5503) from Minneapolis/St. Paul, MN (KMSP) to Montreal/Pierre Elliott Trudeau, QC (CYUL) did not turn at AGNAG towards TIDAS and maintained its heading. Impact: the separation between a Mesa Airlines Bombardier CL-600-2C10 (N513MJ/ASH6138) from Washington/Dulles, DC (KIAD) and EDV5503 was reduced to 2.6 NM and 400 ft, where 3 NM and 1 000 ft are required. No other impact on operations.
UPDATE TSB #A19Q0136: N902XS, an Endeavor Air Canadair CRJ900 (CL-600-2D24) (EDV5503) was flying IFR from Minneapolis—St. Paul/Wold-Chamberlain, MN, to Montreal/Pierre Elliott Trudeau International (CYUL), QC. During its approach to CYUL, the aircraft did not turn towards TIDAS after AGNAG, as prescribed, and instead continued on its course. Separation with N513MJ, a Mesa Airlines Canadair CRJ700 (CL-600-2C10) (ASH6138) flying from Washington-Dulles Intl (KIAD), Washington, DC, to CYUL was reduced to 2.6 NM horizontally and 400 feet vertically, whereas the required separation was 3 NM horizontally or 1,000 feet vertically.

On approach into Montreal/Pierre Elliott Trudeau, QC (CYUL), a Mesa Airlines Bombardier CL-600-2C10 (series 700) (ASH6170) from Washington Dulles (KIAD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) asked that police meet the aircraft due to an unruly passenger on board. Landed at 1842Z. No impact on operations.

A Mesa Airlines Bombardier CL-600-2C10 (Series 700) (N515MJ/ASH6294) from Montreal/Trudeau, QC (CYUL) to Washington-Dulles, VA (KIAD) rejected its takeoff. It took off at 0022Z. No impact.

A Jazz Bombardier CL-600-2B19 (series 200) (JZA8173) from Washington-Dulles, VA (KIAD) to Montreal/Trudeau, QC (CYUL) at 4 000 ft reported that there was a drone in sight at 4 300 ft, downwind. No impact on operations.

A Mesa Airlines Bombardier CL-600-2C10 (series 700) (ASH6259) from Washington-Dulles, VA (KIAD) to Montreal/Trudeau, QC (CYUL) was seen flying at a speed that was incompatible with traffic on approach for Runway 24R and that did not match the instruction given out by air traffic services (ATS) and read back by the aircraft. ATS instructed ASH6259 to conduct a go-around to avoid reducing separation to an inadequate level. No impact on operations.