Runway excursion Incident Boeing 737-823 N901AN, 30 Nov 2010
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ASN Wikibase Occurrence # 83041
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Type:Silhouette image of generic B738 model; specific model in this crash may look slightly different    
Boeing 737-823
Owner/operator:American Airlines
Registration: N901AN
MSN: 29503/184
Fatalities:Fatalities: 0 / Occupants: 113
Other fatalities:0
Aircraft damage: Minor
Location:Montreal-Pierre Elliott Trudeau International Airport, QC (YUL/CYUL) -   Canada
Phase: Landing
Nature:Passenger - Scheduled
Departure airport:Dallas/Fort Worth International Airport, TX (DFW/KDFW)
Destination airport:Montreal-Pierre Elliott Trudeau International Airport, QC (YUL/CYUL)
Investigating agency: TSB Canada
Confidence Rating: Accident investigation report completed and information captured
The American Airlines Boeing 737-823 departed Dallas/Fort Worth as flight AAL802 on a scheduled flight to Montreal/Pierre Elliott Trudeau International Airport, Quebec. After touching down on runway 24R in light rain during the hours of darkness, the aircraft gradually veered left of centerline. It departed the runway surface and stopped in the grass and mud, approximately 90 feet from the runway edge and 6600 feet from the threshold. None of the 106 passengers, 6 crew members, or 1 off-duty crew member were injured. Evacuation was not deemed necessary; all passengers and cabin crew deplaned via an air stair and were transported by bus to the terminal. Damage to the aircraft was minor.

Findings as to causes and contributing factors

Following a stabilized approach and normal landing, the aircraft deviated left of the runway centerline, likely as the result of a nose-gear steering metering low-slew rate jam.
The delayed response to the uncommanded steering event by the pilot flying was not sufficient to counteract the movement toward the left, and the aircraft departed the runway surface.


Accident investigation:
Investigating agency: TSB Canada
Status: Investigation completed
Download report: Final report


Picture taken on Dec. 1 st on incoming flight at 13:25

Revision history:

01-Dec-2010 03:00 TB Added
01-Dec-2010 03:01 TB Updated [Date, Time]
01-Dec-2010 08:12 Anon. Updated [Departure airport, Source, Narrative]
01-Dec-2010 08:36 harro Updated [Aircraft type, Registration, Cn, Location, Departure airport, Destination airport, Source, Narrative]
23-Nov-2011 23:32 emdx Updated [Source]
06-Nov-2013 11:30 harro Updated [Time, Total occupants, Source, Narrative]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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