January 12, 2020

Incident at 125NM SASKATOON SK VORTAC (YXE)

A WestJet Boeing 737-700 (WJA392) from Edmonton, AB (CYEG) to Halifax/Stanfield, NS (CYHZ) reported a loss of reduced vertical separation minimum (RVSM) certification and advised returning to CYEG. No impact to operations.

December 17, 2019

Incident at PESAC intersection

At FL380, a Cargojet Airways Ltd. Boeing 757-23A (C-FKAL/CJT599) from St. Johns, NL (CYYT) to Hamilton, ON (CYHM) mentioned that it had lost its reduced vertical separation minimum (RVSM). No impact on operations.

December 10, 2019

Incident at 4936N / 06446W

An Icelandair EHF Boeing 767-300 (TFISP/ICE614) from New York/John F. Kennedy, NY (KJFK) to Reykjavik, Iceland (BIKF) reported a loss of reduced vertical separation minimum (RVSM).
UPDATE: AOR-259462-V2: No impact to operations. Gander (QX) Area Control Centre (ACC) advised.

November 4, 2019

Incident at 30NM NW SHERBROOKE QC (YSC) VOR/DME

An Airsprint Inc. Cessna 525A (C-FASR/ASP524) on a flight from Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) to Fredericton Intl, NB (CYFC) reported having lost reduced vertical separation minimum (RVSM) capability during enroute climb due to autopilot malfunction. Initially having filed FL330 as a requested cruising altitude, ASP524 revised the requested altitude to FL270. The aircraft was subsequently cleared as requested. No impact on operations.

September 3, 2019

Incident at 4700N / 07300W

A Bombardier Inc. Bombardier CL-600-2B16 (Series 604) (CDR636) from Montreal/Trudeau, QC (CYUL) to Montreal/Trudeau, QC (CYUL), which had been flying for one hour in the Montreal Foxtrot test area, mentioned that it had just realized that its aircraft was registered to the United States (N650DJ) and that it was not below the reduced vertical separation minimum (RVSM). The flight plan we had mentioned that it was certified RVSM. No loss of separation and no impact on operations.

June 29, 2019

Incident at 5028N / 07259W

A Delta Airlines Boeing 767-300 (N178DZ/DAL19) from London/Heathrow, United Kingdom (EGLL) to Detroit/Wayne County, MI (KDTW) reported that it had an altimeter problem and that it had lost its reduced vertical separation minimum (RVSM) certification. No impact on operations.

May 31, 2019

Incident at 4530N / 07445W

A Chrono Aviation Beech B300 (C-GJKA) filed a flight plan, saying that it was equipped to meet reduced vertical separation minimum (RVSM) requirements even though this was not the case. Air traffic services (ATS) asked questions to find out whether or not the aircraft was RVSM, because an email received the day before indicated that it would not be. ATS modified the flight plan accordingly. No impact on separation or operations.

January 27, 2019

Incident at GRINDSTONE (ILES-DE-LA-MADELEINE) QC VOR/DME (YGR)

An Air Canada Embraer E190 (ACA691) from St. Johns Intl, NL (CYYT) to Toronto/Lester B. Pearson Intl, ON (CYYZ) reported loss of reduced vertical separation minimum (RVSM) status followed by loss of auto pilot. The aircraft continued on course to CYYZ. No emergency. No impact to operations.

April 15, 2019

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

An American corporately registered Hawker Beechcraft Hawker 4000 (N400VR/DCM4000) from Keflavik, Iceland (BIKF) to Toronto/Lester B. Pearson, ON (CYYZ) had equipment suffix W indicated on the flight plan. The aircraft advised when issued descent from FL430 that they were negative reduced vertical separation minimum (RVSM). When queried the pilot reported that the aircraft was capable and FAA approved but the paperwork was incomplete for International Operations.

April 28, 2019

Incident at 33NM THUNDER BAY ON VOR/DME (YQT)

A Jazz Bombardier CL-600-2D24 (series 900) (JZA8527) from Ottawa/MacDonald-Cartier, ON (CYOW) to Winnipeg/James Armstrong Richardson, MB (CYWG) reported an electrical issue and reduced vertical separation minimum (RVSM) and would advise if assistance or diversion was required. The aircraft continued to their destination and landed at 2359Z without impact to operations.

April 4, 2019

Incident at 4839N / 09119W

A WestJet Boeing 737-700 (WJA656) from Calgary, AB (CYYC) to Toronto/Pearson, ON (CYYZ) was observed climbing without a clearance. The aircraft left the cleared altitude of FL390 and reached FL410. When queried, the aircraft descended to FL390 and indicated having lost reduced vertical separation minimum (RVSM) certification. No other aircraft in the vicinity and no impact to operations.

October 28, 2019

Incident at 5109N / 10211W

An Air Canada Embraer ERJ 190-100 IGW (C-FMZR/ACA1120) on a flight from Saskatoon/John G. Diefenbaker Intl, SK (CYXE) to Toronto/Lester B. Pearson Intl, ON (CYYZ) reported that due to an altimeter miscompare, the flight was no longer reduced vertical separation minimum (RVSM) compliant. No operational impact.

January 9, 2019

Incident at 5139N / 09800W

A Canadian North Boeing 737-2T2C (C-GDPA/MPE9506) from Winnipeg/Richardson International, MB (CYWG) to Thompson, MB (CYTH) reported a loss of reduced vertical separation minimum (RVSM) capability shortly after departure from CYWG. No traffic in the vicinity. No operational impact.

June 24, 2019

Incident at 5210N / 05316W

A Delta Air Lines Boeing 767-300 (N177DZ/DAL411) from Amsterdam/Schiphol, Netherlands (EHAM) to Orlando, FL (KMCO) lost reduced vertical separation minimum (RVSM) in-flight, and advised unable to continue to destination without a higher level. Re-cleared to FL360. No traffic. No impact to operations.

September 6, 2018

Incident at In the vicinity of: VAL-D'OR QC (CYVO)

A Boeing 737-248C (C-GNLE/NRL950) from Val D'Or, QC (CYVO) to Churchill, MB (CYYQ) reported that after landing, it had lost its instruments for measuring altitude. It had also lost its reduced vertical separation minimum (RVSM) certification. No impact on operations.

September 28, 2018

Incident at 4403N / 07734W

An ExpressJet Airlines Embraer EMB 145 (ASQ4104) from Chicago, IL (KORD) to Ottawa, ON (CYOW) advised loss of reduced vertical separation minimum (RVSM) capability and elected to divert to Rochester, NY (KROC). No impact to operations.

September 1, 2018

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

A Sunwing Airlines Inc. Boeing 737-808 (C-FTDQ/SWG802) from Vancouver Int'l, BC (CYVR) to Toronto/Lester B. Pearson Int'l, ON (CYYZ) had previously advised that they were experiencing mechanical issues to air traffic control (ATC) enroute to CYYZ. Upon reaching 25 nautical miles north of CYYZ (1950Z), SWG802 declared an emergency (PAN PAN) with ATC due to low fuel, requesting priority landing Runway 15L. SWG802 landed at 1954Z and taxied to gate without further incident.
UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Stabilizer Electric trim failed after departure. Crew coordinated with Operational Control Centre (OCC) and Air Traffic Control (ATC) and it was determined that the flight could be continued to CYYZ with manual trim. The technical condition of the aircraft did not allow the use of autopilot. This resulted in not being able to enter Reduced Vertical Separation Minimum (RVSM) airspace. Flying at the lower altitude increased fuel consumption. A PAN PAN was declared. Maintenance Action: STAB trim motor was replaced. No further occurrence reported.
TSB#A18O0127: C-FTDW, a Boeing 737-800 aircraft operated by Sunwing Airlines, was conducting flight SWG802 from Vancouver Intl, BC (CYVR) to Toronto/Lester B. Pearson Intl, ON (CYYZ). After the departure from CYVR, the flight crew were unable to trim the aircraft when using the electric trim switches. The flight crew completed the QRH and continued the flight using the manual trim. In coordination with the operator?s Operations Control Center (OCC) and ATC, it was determined that the aircraft could continue the flight to CYYZ at a lower altitude. During the descent into CYYZ, the flight crew was informed by ATC that the planned Runway 15L was no longer available, and that Runway 23 was now in use. Fuel calculations determined that the landing could be performed on minimum fuel, however ATC informed the flight crew that they were number 6 for the approach. A PAN PAN was declared, and the aircraft was cleared for the ILS approach to Runway 15L where the aircraft landed without further incident with ARFF standing by.

November 4, 2018

Incident at CALGARY INTL AB (CYYC)

At 1735Z, a WestJet Boeing 737-6CT (C-GEWJ/WJA736) from Calgary Intl, AB (CYYC) to London, ON (CYXU) reported a loss of reduced vertical separation minimum (RVSM) certification due to an equipment malfunction and advised that it was returning to Calgary. No impact to operations. The National Operations Centre (NOC) was advised

Incident at 4943N / 10920W

Twenty-five minutes after departure, a WestJet Boeing 737-600 (WJA736) from Calgary Intl, AB (CYYC) to London Intl, ON (CYXU) lost reduced vertical separation minimum (RVSM) certification and opted to return to CYYC. No impact to operations.

October 21, 2018

Incident at 6600N / 07500W

A United States Air Force McDonnell Douglas DC-10 (RCH460) from Ramstein Air Base, Germany (ETAR) to Travis Air Force Base, CA (KSUU) advised that their traffic alert and collision avoidance system (TCAS) was unserviceable (U/S) and that they were now negative reduced vertical separation minimum (RVSM). No impact to operations.

March 7, 2018

Incident at 5506N / 09745W

A Fast Air Israel 1124 (PBR125) from Thompson, MB (CYTH) to Winnipeg/James Armstrong Richardson, MB (CYWG) lost auto pilot on its climb out of CYTH and was no longer reduced vertical separation minimum (RVSM) capable. The aircraft continued to climb to FL390. No impact to operations.

February 10, 2018

Incident at 40NM YORKTON MUNI SK (YQV) VOR/DME

UPDATE from Airworthiness: A Civil Aviation Safety Inspector (CASI) looked into this occurrence. Traffic Alert and Collision Avoidance System (TCAS) fail Fault Isolation Manual (FIM) was carried out. Operational test of TCAS system was carried out with no faults found. Deemed intermittent. No previous history.
A WestJet Boeing 737 800 (WJA167) from Hamilton, ON (CYHM) to Edmonton, AB (CYEG) reported technical issues with onboard systems that resulted in the loss of reduced vertical separation minimum (RVSM) capabilities and area navigation (RNAV). The aircraft was observed veering slightly off-course and was given a vector to avoid opposite direction traffic followed by further vectors to destination. No operational impact.

September 15, 2018

Incident at 4629N / 06542W

An American Airlines, Inc. Airbus A330-300 (N275AY/AAL714) from Philadelphia International, PA (KPHL) to Venice Marco Polo, Italy (LIPZ) was enroute at FL370 when the pilot reported an equipment failure that required them to return to KPHL, due to no longer being "reduced vertical separation minimum" (RVSM). The Boston (BOS) air route traffic control center (ARTCC) was advised and the aircraft left the Moncton Area Control Centre (ACC) airspace at 0016Z.

April 15, 2018

Incident at In the vicinity of: Gary / Chicago Intl., IN 4713N / 06316W

The flight plan of a Gulfstream Aerospace Gulfstream IV (N68AL) from Gary / Chicago Intl., IN (KGYY) to Birmingham, UK (EGBB) indicated that the aircraft was reduced vertical separation minimum (RVSM) certified. The pilot informed the controller that the aircraft did not have this certification.

January 30, 2017

Incident at 5120N5936W

A Kalitta Charters Boeing 767 300 (CKS9762) from Teruel, Spain (LETL) to Ypsilanti, MI (KYIP) reported a traffic alert and collision avoidance system (TCAS) failure causing a loss of reduced vertical separation minimum (RVSM) certification.

February 25, 2017

Incident at In the vicinity of: ENDERBY BC (YNY) VOR/DME

An Air Canada Boeing 767-375 (C-FCAF/ ACA290) from Kahului, HI (PHOG) to Calgary, AB (CYYC) reported the primary altimeter had failed. Air Traffic Control (ATC) considered the aircraft to be non-reduced vertical separation minimum (non-RVSM) capable and vectored the aircraft away from opposite direction traffic at 1000ft below.

January 27, 2017

Incident at PORT HARDY BC (YZT) VOR

A United States Air Force Boeing KC-135R (SPUR61) from Eielson Air Force Base, AK (PAEI) to Fairchild Air Force Base, WA (KSKA) reported a navigation equipment failure and indicated loss of reduced vertical separation minimum (RVSM) certification. The aircraft was able conventional navigation and continued to destination, no operational impact.

April 15, 2017

Incident at AMESON ON (YAN) VOR/DME

A Jazz Aviation Bombardier CL-600-2D24 (JZA8600), from Winnipeg/James Armstrong Richardson, MB (CYWG) to Montreal/Pierre Elliott Trudeau, QC (CYUL) advised that it had lost its reduced vertical separation minimum (RVSM) certification. No impact.

March 25, 2017

Incident at 70NM NW MOOSONEE ON (CYMO)

A US Air Force Boeing KC-135R (BOBBY71) from Mildenhall (EGUN), UK, to Fairchild Air Force Base (KSKA), WA, declared an emergency due to an equipment problem affecting the reduced vertical separation minimum (RVSM) navigation system. No route deviation observed. The aircraft was transferred to the Edmonton Centre at 2105Z and continued to its destination. No impact on operations.

March 15, 2017

Incident at 35NM N OTTAWA / MACDONALD-CARTIER INTL ON (CYOW)

A Government of Canada, Department of National Defense McDonnell Douglas CF-18 Hornet (KUGR21) from Mirabel, QC (CYMX) to Thunder Bay, ON (CYQT) reported a pressurization problem and requested to descend from FL430 to FL380 (negative reduced vertical separation minimum (RVSM)). The pilot did not declare an emergency. No impact on operations.

January 12, 2017

Incident at In the vicinity of: LETHBRIDGE AB (YQL) VOR/DME

The pilot of a Jazz Bombardier CL-600-2D15 (C-FKJZ/ JZA8778) from Regina, SK (CYQR) to Vancouver, BC (CYVR) informed Air Traffic Control (ATC) that they were no longer reduced vertical separation minimum (RVSM) certified. The aircraft was at FL380 and allowed to continue to destination. No operational impact.

December 16, 2017

Incident at 4751N / 05921W

A United States Air Force Lockheed C-5 (RCH293) from Westover Air Reserve Base, MA (KCEF) reported loss of reduced vertical separation minimum (RVSM) status and requested to divert back to departure airport KCEF. Clearance given no other issue.

November 8, 2017

Incident at 4534N / 06421W

A United States Air Force Boeing KC-135R (OLIVE56) on a flight from Mildenhall, UK (EGUN) to Bangor, ME (KBGR) at FL340 advised of auto-pilot failure & loss of reduced vertical separation minimum (RVSM) at 1520Z. No emergency. No assistance required.

August 29, 2016

Incident at 63NM N FL 350 INUKJUAK QC (CYPH)

En route, a United Airlines Boeing 777 200 (UAL990), from San Francisco (KSFO), CA, to Paris (LFPG), France, reported losing its reduced vertical separation minimum (RVSM) certification and asked to be diverted to Toronto (CYYZ), ON. No emergency. En route to CYYZ, UAL990 asked to be diverted again, this time to Newark (KEWR), NJ. No impact.

January 1, 2016

Incident at 38NM SW VOR YBG (BAGOTVILLE, QC)

An American, corporately registered Learjet 45 (N121GZ), from Green Bay (KGRB), WI, to Gander (CYQX), NL, reported an equipment problem and switched to non-RVSM flight. Instead of continuing to CYQX, its destination, it decided to land at Windsor Locks/Bradley (KBDL), CT. No emergency declared. No impact on operations.

December 20, 2016

Incident at 50 NM W COMOX BC (CYQQ)

An Omni Air Express Boeing 767-33A (N378AX/ OAE271) from Seattle, WA (KSEA) to Yokata Air Base, Tokyo (RJTY) reported equipment problems affecting their ability to remain in reduced vertical separation minimum (RVSM) airspace, subsequently returning to KSEA after dumping fuel for approximately 1 hour. No operational impact.

January 13, 2016

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

At 2309Z, a Thomson Airways Boeing 737-800 operated by Sunwing Airlines Inc. (G-TAWD/SWG684) from Toronto, ON (CYYZ) to Varadero, Cuba (MUVR) declared PAN and mentioned reduced vertical separation minimum (RVSM) status at that time and requested a return to CYYZ. Pilot was able to advise of flight control problems and de-icing issues. SWG684 declared Mayday at 2318Z. Aircraft Rescue and Fire Fighting (ARFF) was advised. SWG684 landed on Runway 23 at 2338Z and taxied to the ramp. One flight was held four minutes to accommodate the emergency. Transportation Safety Board (TSB) was advised.
UPDATE: TSB#A16O0007: G-TAWD, a Thomson Airways Ltd Boeing 737-800 aircraft operating as Sunwing flight SWG684, departed Toronto/LBPIA, ON (CYYZ) for Varadero/Juan Gualberto Gómez Intl, Cuba (MUVR). During climb out, the flight crew could not engage the auto pilot. The climb was stopped at FL210 to troubleshoot the problem. While at FL210, the speed trim and yaw damper failed, however the flight crew was able to re-engage the yaw damper. A PAN PAN was declared and a return to Toronto was requested. The flight crew found that the elevator was hard to control and they were having difficulty controlling the aircraft. A Mayday was then declared and the aircraft was given priority to land. While on approach, the yaw damper disengaged. The aircraft landed without further incident.

October 6, 2016

Incident at 100NM S CALGARY INTL AB (CYYC)

A WestJet Boeing 737 600 (WJA482) from Vancouver, BC (CYVR) to Winnipeg, MB (CYWG) advised they were non reduced vertical separation minimum (RVSM) due to loss of traffic alert and collision avoidance system (TCAS). WJA4842 was cleared down to FL270. No impact on operations.

August 22, 2016

Incident at 55 NM E WINNIPEG / JAMES ARMSTRONG RICHARDSON INTL MB (CYWG)

A Delta Air Lines Boeing 757 200 (N6706Q / DAL2818) from Minneapolis-St-Paul, MN (KMSP) to Anchorage, AK (PANC) reported a loss of equipment resulting in losing reduced vertical separation minimum (RVSM) status and advised returning to KMSP. No impact to operations.

July 23, 2016

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

Shortly after departure, a WestJet Boeing 737-8CT (C-GJLZ / WJA520) from Winnipeg, MB (CYWG) to Toronto, ON (CYYZ) indicated issues with the flight management computer (FMC) and advised Winnipeg area control centre (ACC) that they were unable to be reduced vertical separation minimum (RVSM). WJA520 was able to fly the area navigation (RNAV) points and continued to their destination. No other impact to operations.

May 17, 2016

Incident at 265 E IQALUIT NU (CYFB)

A United States Air Force Lockheed C-5 (Galaxy) (RCH381) from Ramstein Air Base, Germany (ETAR) to Travis Air Force Base, Fairfield, CA (KSUU) proceeded through reduced vertical separation minimum (RVSM) airspace on a RVSM flight plan. As RCH381 exited RVSM airspace, the aircraft identified that they were not RVSM capable due to equipment issues. No impact on operations.

February 19, 2016

Incident at In the vicinity of: EDMONTON INTL AB (CYEG)

UPDATE: TSB#A16P0037: C-GBWS, a WestJet Boeing 737-600, was operating as flight WJA195 from Edmonton Intl, AB (CYEG) to Comox, BC (CYQQ). While en route, the flight crew notified ATC of a mechanical problem and that they were no longer able to comply with the reduced vertical separation minimum (RVSM) certification. The aircraft returned to Edmonton where the operator?s maintenance replaced the electric stab trim motor.
A WestJet Boeing 737-6CT (C-GBWS/WJA195) from Edmonton, AB (CYEG) to Comox, BC (CYQQ) advised of a mechanical problem and deemed they were no longer reduced vertical separation minimum (RVSM) certified and diverted back to CYEG. No operational impact.

May 19, 2016

Incident at 100NM E TUSKY

A Delta Air Lines Boeing 767 400 (N832MH/DAL28) from Atlanta, GA (KATL) to London, England (EGLL) advised of enroute loss of reduced vertical separation minimum (RVSM) capability. The aircraft continued to it's destination, non-RVSM. Air traffic service (ATS) was provided.

April 25, 2016

Incident at 4801N06415W

A Jet Airways Airbus A330-300 (VTJWT/JAI233) from Toronto, ON (CYYZ) to Amsterdam, Netherlands (EHAM) lost their reduced vertical separation minimum (RVSM) status while in Boston, MA Airspace and was continuing on NON-RVSM. The pilot advised that they would have to cross the ocean at FL280 due to the RVSM status and elected to return to CYYZ due to predicted fuel burn. No assistance required. No impact on the operation.

March 20, 2016

Incident at North Atlantic Tracks (Weather - clear air turbulence (CAT)/turbulence, ATM - other)

At time 0000Z, the Prestwick supervisor called Gander to advise that reduced vertical separation minima (RVSM) would be suspended on all tracks due to a large SIGMET between 20W and 30W forecasting severe turbulence FL310 and above. At time 0245Z, RVSM was reinstated after pilot reports indicated there was no longer any severe turbulence. Impact to operations was minimal due to light loadings on the tracks and requests to avoid the SIGMET area.

March 2, 2016

Incident at In the vicinity of: SYDNEY / J. A. DOUGLAS McCURDY NS (CYQY)

An Irving Oil Transport Inc. Bombardier BD-100 Challenger 300 (KCE1) from St. John's, NL (CYYT) to Saint John, NB (CYSJ) reported a loss of reduced vertical separation minimum (RVSM) certification due to an autopilot malfunction. Requested and given descent to FL280.

January 2, 2016

Incident at Newark International Airport

A United Airlines Boeing 767 300 (UAL922) from Heathrow, UK (EGLL) to Newark, NJ (KEWR) informed Controller that their altimeter was not reading correctly therefore they would have to continue flight as non-reduced vertical separation minimum (RVSM). Aircraft remained at FL380. No further assistance required.

November 3, 2015

Incident at 20 SW CHIBOO, QC NDB (MT)

A First Air Boeing 737-46B (C-FLER/ FAB861) from Iqaluit, NU (CYFB) to Ottawa, ON (CYOW) reported having lost reduced vertical separation minimum (RVSM). No impact on operations.

October 28, 2015

Incident at ANCER INTERSECTION

A British Airways Boeing 787-9 (BAW9L), from London (EGLL), UK, to Toronto/Lester B. Pearson (CYYZ), ON, reported an electric problem in the cabin. BAW9L continued its flight at non-reduced vertical separation minimum (RVSM). No emergency declared. No impact on operations.

September 10, 2015

Incident at N5114/W6115

UPDATE: TSB#A15A0070 - The Jazz Flight 8899 CRJ2 (registration C-GKEP) aeroplane was enroute from Goose Bay (CYYR) to Halifax (CYHZ). During climb to cruising altitude the crew observed an intermittent TCAS/FAIL message that extinguished and did not reappear. While in cruise, at FL320, ATC pointed out two aircraft as traffic that did not show up on TCAS. The crew determined that their TCAS was not operational, consulted the MEL, and observed in the MEL that RVSM flight without TCAS was prohibited. The crew advised ATC the TCAS was not operational and requested descent to FL280. The flight was continued at FL280 to destination.
Moncton High controller passed traffic at 1239Z between a Jazz Bombardier CL-600-2B19 (JZA8899) from Goose Bay, NL (CYYR) to Halifax, NS (CYHZ) at FL320 and a United Parcel Service McDonnell Douglas MD-11 (UPS213) from Louisville, KY (KSDF) to Cologne, Germany (EDDK) at FL330. JZA8899 also passed another aircraft, a Southern Air Boeing 777 200 (SOO275) from Cincinnati, OH (KCVG) to Bahrain (OBBI) at FL310. At 1244Z, JZA8899 advised they had lost traffic alert and collision avoidance system (TCAS) and were no longer reduced vertical separation minimum (RVSM) certified and requested FL280. The aircraft was coordinated with Gander and Montreal and given FL280. Pilot was queried on when they had lost the RVSM certification and indicated on departure during climb out.

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