December 3, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A Sky Regional Airlines Embraer ERJ 170-200SU (C-FRQW/SKV7590) from Chicago/OHare Intl, IL (KORD) to Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) reported a probable bird strike while in the flare. An inspection was conducted, and nothing was found. No impact.

November 28, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A SkyWest Airlines Bombardier CL-600-2C10 (Series 700) (SKW3102) from Chicago/OHare, IL (KORD) to Montreal/Trudeau, QC (CYUL) was instructed to reject its approach on Runway 06R due to the presence of the snow-removal crew on the runway. The aircraft landed at 1650Z. No other impact on operations.

November 24, 2019

Incident at 4752N / 07805W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Emirates Boeing 777-300 (A6EQB/UAE235) from Dubai, United Arab Emirates (OMDB) to Chicago/OHare Intl, IL (KORD) was not following the cleared route. The flight was cleared again to follow DCT ODAXY WYNDE1. No impact on operations.

November 20, 2019

Incident at 5453N / 06845W

A route deviation was detected by the automatic dependent surveillance – contract (ADS-C) for a KLM Royal Dutch Airlines Boeing 787-9 (PHBHA/KLM611) on a flight from Amsterdam, Netherlands (EHAM) to Chicago/OHare Intl, IL (KORD). The route in the flight plan was DCT VANSI DCT SSM WYNDE1. The aircrafts route was DCT VANSI DCT FOLGO MADII4. The crew admitted its error. No impact on operations.

November 15, 2019

Incident at 5900N / 07220W

Automatic dependent surveillance – contract (ADS-C) detected a route deviation by a Lufthansa Cargo AG Boeing 777-200 (DALFC/GEC188) from Frankfurt, Germany (EDDF) to Chicago/OHare Intl, IL (KORD). The route in its flight plan was 55n080w DCT 50n085w FOLGO MADII4, but the aircrafts route was 55n080w DCT FOLGO MADII4. No impact on operations.

November 13, 2019

Incident at 4NM W MONTRÉAL / ST-HUBERT QC (CYHU)

An American corporately registered Cessna 550 (DCM6413) from Montreal/St-Hubert, QC (CYHU) to Chicago/OHare Intl, IL (KORD) received and read back 3 000 ft for a standard instrument departure (SID) from CYHU, but the aircraft was seen at 3 400 ft. No impact on operations.

November 1, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

Numerous aircraft had to overshoot due to high winds and gusts, including an Embraer ERJ 170-200 SU (C-FEKD/SKV7590) on a flight from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) that conducted an overshoot at 1306Z.

October 30, 2019

Incident at 5002N / 07731W

A United Airlines Boeing 767-322 (N657UA/UAL931) from Chicago/OHare, IL (KORD) to London/Heathrow, United Kingdom (EGLL) requested a return to KORD due to a mechanical problem (a hydraulic system light). No emergency was declared. No impact on operations.

October 28, 2019

Incident at 6100N / 06931W

A Norwegian Air Shuttle Boeing 787-9 (LNLNO/NAX7UA) from Paris-Charles de Gaulle, France (LFPG) to Los Angeles Intl, CA (KLAX) declared a medical emergency for a passenger on board and requested a destination change to Goose Bay, NL (CYYR). Directly above MT, the aircraft reported that the passengers condition had improved, and it requested to be vectored to Chicago/OHare, IL (KORD). Coordination carried out. No impact on operations.

October 18, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A Sky Regional Airlines Embraer ERJ 170-200 SU (SKV7590) from Chicago/OHare Intl, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) 7 NM on final for Runway 24L received a traffic alert and collision avoidance system resolution advisory (TCAS RA). A light pull-up was conducted. The traffic over 1 000 ft below it was a 9205-2687 Québec Inc. Robinson R44 (C-GMVQ) from Montreal/Mirabel Intl, QC (CYMX) to Montreal/St-Hubert (Heli), QC (CTG2). The traffic information was exchanged. No impact on operations.

Incident at 4952N / 07700W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Aerologic GMBH Boeing 777-200 (DAALI/BOX414) on a flight from Frankfurt, Germany (EDDF) to Chicago/OHare Intl, IL (KORD) was not following the route in its flight plan, which was ODAXY OBSTR WYNDE1. The report indicated that the aircraft was following ODAXY WINDE1. No impact on operations.

October 19, 2019

Incident at 4810N / 07844W

An automatic dependent surveillance – contract (ADS-C) report indicated that an AirBridgeCargo Airlines Boeing 747-800 (VQBGZ/ABW503) from Frankfurt, Germany (EDDF) to Chicago/OHare Intl, IL (KORD) was not following the route in its flight plan, which was ROUND ODAXY WYNDE1. The report indicated that the aircraft was instead following ROUND ODAXY OBSTR WYNDE1. No impact on operations.

Incident at 4820N / 07901W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Aerologic GMBH Boeing 777-200 (DAALF/BOX492) from Frankfurt, Germany (EDDF) to Chicago/OHare Intl, IL (KORD) was not following the route in its flight plan, which was ODAXY OBSTR WYNDE1. The report instead indicated that the aircraft was following ODAXY WINDE1. No impact on operations.

October 11, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A SkyWest Airlines Bombardier CL-600-2C10 (SKW3102) from Chicago/OHare Intl, IL (KORD) to Montreal/Pierre Elliott Trudeau Intl, QC (CYUL) rejected its approach on Runway 06L due to unstable approach. No impact on operations.

October 9, 2019

Incident at 4932N / 07459W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Ethiopian Airlines Boeing 787-8 (ETASG/ETH510) from Dublin, Ireland (EIDW) to Chicago/OHare Intl, IL (KORD) was not following the route in its flight plan, which was MT ODAXY OBSTR WYNDE9. The report indicated that the aircraft followed MT ODAXY GAULT WYNDE9. No impact on operations.

October 5, 2019

Incident at 42NM W MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A Sky Regional Airlines Embraer ERJ 170-200 SU (C-FEJB/SKV7590) from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) declared PAN PAN due to an oil leak. SKV7590 landed without incident at 1727Z.
Update TSB Report #A19Q0167: C-FEJB, a Sky Regional Airlines Embraer 170 (SKV7590) with 4 crew members and 71 passengers on board, was on an instrument flight rules (IFR) flight from Chicago/OHare Intl, IL (KORD) to Montreal/Pierre Elliott Trudeau Intl, QC (CYUL). While the aircraft was at FL35O approximately 42 miles west of CYUL, the flight crew received a hydraulic fluid drop message for system #1 in the engine-indicating and crew-alerting system (EICAS). The flight crew performed the applicable verifications and declared PAN PAN. The aircraft continued its route to CYUL where it landed without any problems. Once it was on the ground, the aircraft was stopped on the runway and emergency staff could see a hydraulic fluid leak under the left engine nacelle. The engine was turned off and the aircraft, escorted by emergency vehicles, taxied up to the passenger bridge. The engine-driven pump (EDP) in the left engine was replaced and the aircraft was returned to service.

October 6, 2019

Incident at QUÉBEC / JEAN LESAGE INTL QC (CYQB) (Aerodrome, runway or taxiway shutdown)

An ExpressJet Airlines Embraer EMB-145 (ASQ4052) from Chicago/OHare, IL (KORD) to Quebec/Jean Lesage, QC (CYQB) on final for Runway 06 was instructed to overshoot because the runway inspection following the arrival of a four-engine aircraft was not yet complete.

September 30, 2019

Incident at 5303N / 06930W

A Qatar Airways Boeing 777-333ER (A7BER/QTR725) from Doha, Qatar (OTHH) to Chicago/OHare, IL (KORD) declared a medical emergency in flight and was instructed to divert to Montreal/Pierre Elliott Trudeau, QC (CYUL) instead of KORD. QTR725 made it to the ground without incident on Runway 06R at 1756Z. No impact on operations.

September 21, 2019

Incident at POLTY intersection

An American Airlines Boeing 787-8 (N812AA/AAL160) on a flight from Chicago/OHare Intl, IL (KORD) to Athens Intl, Greece (LGAV) reported a mechanical systems failure and returned to KORD. No impact on operations.

September 29, 2019

Incident at 5051N / 07536W

A route deviation was detected by the automatic dependent surveillance – contract (ADS-C) for an Aerologic GMBH Boeing 777-200 (DAALL/BOX418) from Frankfurt, Germany (EDDF) to Chicago/OHare Intl, IL (KORD). The route in the flight plan was DCT ROUND ODAXY OBSTR WYNDE9, but the aircraft followed DCT ROUND ODAXY GAULT WYNDE9. No impact on operations.

September 4, 2019

Incident at 5002N / 07740W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Alitalia Airbus A330-200 (EIEJI/AZA28FK) from Rome/Fiumicino, Italy (LIRF) to Chicago/OHare, IL (KORD) was not following the route in its flight plan. No impact on operations.

September 9, 2019

Incident at 4901N / 07806W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Air France Boeing 777-233LR (FGUOC/AFR6740) from Paris/Charles de Gaulle, France (LFPG) to Chicago/OHare, IL (KORD) was not following the route in its flight plan, which was ODAXY OBSTR WYNDE9. The report indicated that the aircraft was instead following ODAXY GAULT. No impact on operations.

August 27, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL) (FOD (foreign object debris), Aerodrome, runway or taxiway shutdown)

A Sky Regional Airlines Embraer ERJ 170-200 SU (SKV7593) from Montreal/Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD) reported foreign object debris on Runway 24R at takeoff. The foreign object debris was picked up during the inspection. Impact: 3 departures were delayed by under 10 minutes.

August 16, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A Sky Regional Airlines Embraer ERJ 170-200 SU (C-FEKS/SKV7596) from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) rejected its approach at the towers request. SKV7596 received and read back the instruction to fly at 160 kts or under, but the aircraft was seen flying 110 kts faster than a Jazz de Havilland DHC-8-301 (C-GLTA/JZA8907) from Moncton/Roméo LeBlanc, NB (CYQM) to Montreal/Pierre Elliott Trudeau, QC (CYUL), which was in front of it. No other impact on operations.

August 15, 2019

Incident at 4725N / 07851W

According to an automatic dependent surveillance – contract (ADS-C) report, an Air France Airbus A330-200 (FGZCK/AFR136) from Paris/Charles de Gaulle, France (LFPG) to Chicago/OHare, IL (KORD) was following ODAXY WYNDE9, even though the route known to the air traffic controller (ATC) was ODAXY OBSTR WYNDE9. No impact on operations.

August 5, 2019

Incident at 67NM VAL D'OR QC VOR/DME (YVO)

While en route, a British Airways Airbus A380-800 (BAW297) from London/Heathrow, United Kingdom (EGLL) to Chicago/OHare, IL (KORD) reported a medical emergency involving a passenger on board and requested to divert to Toronto/Lester B. Pearson, ON (CYYZ). Coordination carried out. A few minutes later, BAW297 told the Greater Toronto Airports Authority (GTAA) that it was continuing its flight to KORD. After a few moments and after coordination with Toronto, BAW297 was redirected to CYYZ. No impact.

August 4, 2019

Incident at 5025N / 07614W

An automatic dependent surveillance – contract (ADS-C) report indicated that an Air France Airbus A330-200 (FGZCN/AFR136) from Paris/Charles de Gaulle, France (LFPG) to Chicago/OHare, IL (KORD) was flying ODAXY WYNDE9 whereas the Canadian Automated Air Traffic System (CAATS) flight plan was ODAXY OBSTR WYNDE9. No impact on operations.

August 10, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL) (Aerodrome, runway or taxiway shutdown, FOD (foreign object debris))

The terminal control unit (TCU) indicated that a SkyWest Airlines Bombardier CL-600-2B19 (N928EV/SKW3130) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD) had possibly experienced a bird strike while taking off from Runway 24R. Two birds were found during the inspection. Impact: the following departures were delayed: JZA8770 and JZA8902. ACA871 was reassigned to Runway 24L for its arrival.

August 15, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL) (FOD (foreign object debris), Aerodrome, runway or taxiway shutdown)

A Jazz de Havilland DHC-8-402 (C-GGCI/JZA7956) from Toronto/Billy Bishop, ON (CYTZ) to Montreal/Pierre Elliott Trudeau, QC (CYUL) reported a dead bird on the runway during its landing. Impact: a Sky Regional Embraer ERJ 175 (SKV7593) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD) and a Jazz Bombardier CL-600-2D24 (series 900) (JZA8704) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Quebec/Jean Lesage, QC (CYQB) were delayed.

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A SkyWest Airlines Bombardier CL-600-2B19 (N863AS/SKW269T) from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) overshot Runway 06L due to unstable approach. The aircraft landed on Runway 06L at 1539Z. No impact.

August 6, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

On final for Runway 24R, an ExpressJet Embraer EMB-145XR (ASQ4088) from Chicago/OHare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL) indicated that it had been blinded by the Place Ville-Marie revolving light.

August 8, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL) (Aerodrome, runway or taxiway shutdown)

A SkyWest Airlines Bombardier CL-600-2B19 (N928EV/SKW3130) on a flight from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chicago/OHare Intl, IL (KORD) reported a bird strike on rotation. Impact: an Air Transat Airbus A321-271NX (C-GOJF/TSC908) on a flight from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Cayo Coco, Cuba (MUCC) and a GoJet Airlines Bombardier CL-600-2C10 (N653CA/GJS6282) on a flight from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Detroit/Wayne County Intl, MI (KDTW) were delayed.

August 7, 2019

Incident at 5129N / 07905W

An automatic dependent surveillance – contract (ADSC) report indicated that a Qatar Airways Boeing 777-300 (A7BEN/QTR725) on a flight from Doha, Qatar (OTHH) to Chicago/OHare Intl, IL (KORD) was not following the route in its flight plan. QTR725 was following SSM WYNDE9, even though the route known by the air traffic controller (ATC) was SSM TVC J548 PECOK PMM J547 KUBBS V84 PAPPI SAMPL. No impact.

July 26, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

An Air Canada Rouge Airbus A319-112 (C-GSJB/ROU1523) from St. Johns, NL (CYYT) to Montreal/Trudeau, QC (CYUL) performed a go-around at the controller because an Sky Regional Airlines Embraer ERJ 170-200 SU (C-FXJC/SKV7597) from Montreal/Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD) was slow to clear the runway.

July 25, 2019

Incident at 25NM LA TUQUE QC NDB (YLQ) (ELT)

At 0010Z, a British Airways Boeing 747-400 (GCIVI/BAW20R) from Chicago/OHare, IL (KORD) to London/Heathrow, United Kingdom (EGLL) picked up the signal of an emergency locator transmitter (ELT) from FL350, 270/025NM from the La Tuque, QC (YLQ) non-directional beacon (NDB), up to 090/20NM from the YLQ NDB, at 0015Z. Joint Rescue Coordination Centre (JRCC) Trenton was notified.

July 4, 2019

Incident at 79NM MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A United Airlines Boeing 777-222 (N785UA/UAL987) from Chicago/OHare, IL (KORD) to Paris/Charles de Gaulle, France (LFPG) advised air traffic control (ATC) that they would be diverting to Newark, NJ (KEWR) due to a mechanical issue. No emergency declared, no impact on operations.

June 29, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

An ExpressJet Airlines Embraer EMB-145XR (N14158/ASQ4086) from Chicago/OHare, IL (KORD) to Montreal/Trudeau, QC (CYUL) conducted a go-around on Runway 06L due to wind shear. No impact.

June 17, 2019

Incident at 23NM MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

While en route, an ExpressJet Airlines Embraer ERJ-145 (ASQ4074) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD) reported a fuel leak, requested a return to CYUL, and declared an emergency. Coordination was carried out. ASQ4074 was on the ground on Runway 06R at 0013Z. Impact: eight departures were delayed by approximately 10 min and four arrivals were delayed by 6 min. The National Operations Centre (NOC) and the Air and Space Operations Centre (AOC) were notified.
Update #A19Q0090: An ExpressJet Airlines Embraer EMB-145XR (N12167/ASQ4074) flew on instrument from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chicago/OHare Intl, IL (KORD). Approximately 23 NM west of CYUL, the flight crew declared an emergency due to a fuel leak and requested to return to CYUL where the aircraft landed without any other problems.

June 4, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A SkyWest Airlines Bombardier CL-600-2B19 (series 200) (SKW206Y) from Chicago/OHare, IL (KORD) to Montreal/Trudeau, QC (CYUL) conducted a go-around on final for Runway 24R due to wind shear. The aircraft then landed. No impact on operations.

May 29, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL) (ATS operating irregularity)

A Trans States Airlines Embraer EMB-145 (LOF4772) from Chicago/OHare, IL (KORD) to Montreal/Trudeau, QC (CYUL), on descent into CYUL, received a traffic alert and collision avoidance system (TCAS) resolution advisory (RA) with a Sky Regional Airlines Embraer ERJ 170-200 SU (SKV7591) from Montreal/Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD). Spacing was 1200 ft and 0.9NM. LOF4772 climbed back up to 8500 ft and SKV7591 descended to 6500 ft. No other impact on operations.

May 15, 2019

Incident at 5025N / 07738W

According to an automatic dependent surveillance – contract (ADS-C) report, an Air France Airbus A330-200 (AFR136) from Paris, France (LFPG) to Chicago, IL (KORD) was following a path different from the cleared route. No impact on operations.

May 10, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

Air traffic services (ATS) instructed a Jazz Bombardier CL-600-2B19 (C-GQJA/JZA8503), from Fredericton, NB (CYFC) to Montreal/Trudeau, QC (CYUL) to conduct a go-around while the aircraft was approximately 2 1/2 NM on final for Runway 24L. The preceding arrival, a SkyWest Bombardier CL-600-2B19 (N902EV/SKW3130) from Chicago/OHare, IL (KORD) to Montreal/Trudeau, QC (CYUL) had missed exit A4, and a Jazz de Havilland DHC-8-402 (C-GGAH/JZA7959) from Montreal/Trudeau, QC (CYUL) to Toronto/Billy Bishop, ON (CYTZ) was lined up for departure. JZA8503 landed on Runway 24L at 1534Z.

May 1, 2019

Incident at 4831N / 07729W

According to an automatic dependent surveillance – contract (ADS-C) report, an AirBridgeCargo Boeing 747-400 (VQ-BIA/ABW301) from Moscow, Russia (UUEE) to Chicago, IL (KORD) did not follow the route in the flight plan.

April 28, 2019

Incident at 4926N / 07823W

According to an automatic dependent surveillance – contract (ADS-C) report, a Cargologicair Boeing 747-800 (GCLAB/CLU610) from Sheremetyevo, Russia (UUEE) to Chicago/OHare, IL (KORD) did not follow the route in the flight plan. No impact on operations.

Incident at 5507N / 06822W

According to an automatic dependent surveillance – contract (ADS-C) report, a Qatar Airways Boeing 777-300 (QTR725) from Doha, Qatar (OTHH) to Chicago/OHare, IL (KORD) was not following the route in the flight plan.

April 23, 2019

Incident at 5010N / 06200W

A Qatar Airways Boeing 777-300 (QTR726) from Chicago, IL (KORD) to Doha, Qatar (OTHH) reported moderate to severe turbulence at FL310. Requested climb to FL320. Halifax (HZ) flight information centre (FIC) advised. No impact on the operation.

April 22, 2019

Incident at 4742N / 07822W

According to an automatic dependent surveillance – contract (ADS-C) report, an Ethiopian Airlines Boeing 787-8 (ETASG/ETH510) from Dublin, Ireland (EIDW) to Chicago, IL (KORD) did not follow the route in the flight plan. The aircraft was cleared once more to follow the route in the flight plan.

April 28, 2019

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

A SkyWest Airlines Bombardier CL-600 2B19 (series 200) (SKW3130) from Montreal/Pierre Elliott Trudeau, QC (CYUL) to Chicago/OHare, IL (KORD) reported the presence of a drone on its right side while taking off from Runway 24L. Police were notified. No impact on operations.

April 10, 2019

Incident at 5646N / 06642W

A British Airways Boeing 747-400 (G-BYEA/BAW295) from London, United Kingdom (EGLL) to Chicago, IL (KORD) deviated from its route according to an automatic dependent surveillance – contract (ADS-C) report. Route in the flight plan: LAKES HINGE MCKEE 5550/6905 YFM F/P. Route followed by the aircraft: LAKES HINGE MCKEE YFM F/P. The crew admitted and confirmed the error. No impact on operations.

April 8, 2019

Incident at CYUL 240 / 25

A SkyWest Airlines Bombardier CL-600-2B19 (SKW3130) from Chicago, IL (KORD) to Montreal, QC (CYUL) reported that it had lost its airspeed indicator and declared an emergency. Emergency measures were taken. SKW3130 landed on Runway 06R at 1510Z. No impact on operations.
TSB Update #A19Q046: A SkyWest Airlines Bombardier CRJ-200 (N928EV/SKW3130), with 3 crew members and 44 passengers on board was on an instrument flight rules (IFR) flight from Chicago O’Hare, IL (KORD) to Montreal/Pierre Elliott Trudeau, QC (CYUL). While inbound for CYUL, at FL200, speed indications became unreliable; the pilot-in-commands anemometer displayed an "amber IAS flag" (indicated airspeed); the co-pilots indicated 40 kts and his altimeter was fluctuating. The flight crew declared an emergency. The aircraft landed without incident on Runway 06R, with Aircraft Rescue and Fire Fighting (ARFF) services present and ready to intervene. No damage or injuries to report.

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