Aircraft Incident/Accident Report
Jackson Hole Airport

Jackson Hole, Wyoming
Wednesday, December 29, 2010 11:38 MST

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NTSB Narrative Summary Released at Completion of Accident
The National Transportation Safety Board’s full report is available at http://www.ntsb.gov. The Aircraft Accident Report number is NTSB/AAR-12/01. On December 29, 2010, about 1138 mountain standard time, American Airlines flight 2253, a Boeing 757-200, N668AA, ran off the departure end of runway 19 after landing at Jackson Hole Airport (JAC), Jackson Hole, Wyoming. The airplane came to rest about 730 feet past the departure end of the runway in deep snow. The 179 passengers, 2 pilots, and 4 flight attendants on board were not injured, and the airplane sustained minor damage. The airplane was registered to and operated by American Airlines as a scheduled domestic flight under the provisions of 14 Code of Federal Regulations (CFR) Part 121. Instrument meteorological conditions in light snow prevailed at JAC at the time of the landing, and the flight operated on an instrument flight rules flight plan. The flight originated from Chicago O’Hare International Airport (ORD), Chicago, Illinois, about 0941 central standard time.
NTSB Probable Cause Narrative
a manufacturing defect in a clutch mechanism that prevented the speedbrakes from automatically deploying after touchdown, and the captain’s failure to monitor and extend the speedbrakes manually. Also causal was the failure of the thrust reversers to deploy when initially commanded. Contributing to the incident was the captain’s failure to confirm speedbrake extension before announcing their deployment, and his distraction caused by the thrust reversers’ failure to initially deploy after landing.
Event Information
Type of EventIncident 
Event Date12/29/2010 
Event Day of the WeekWednesday 
Time of Event1138 
Event Time ZoneMountain Standard Time 
Event CityJackson Hole 
Event StateWYOMING 
Event Country-- 
Zipcode of the event site-- 
Event Date Year2010 
Event Date Month12 
MidAir Collision IndicatorNo 
On Ground Collision occurred ?No 
Event Location Latitude-- 
Event Location Longitude-- 
Event Location AirportJackson Hole Airport 
Event Location Nearest Airport IDJAC 
Indicates whether the acc/inc occurred off or on an airportOn Airport 
Distance from airport in statute miles-- 
Degrees magnetic from airport-- 
Airport Elevation6491 
Weather Briefing Completeness-- 
Investigator's weather sourceWeather Observation Facility 
Time of the weather observation1143 Mountain Standard Time 
Direction of event from weather observation facility (degrees)-- 
Weather Observation Facility IDJAC 
Elevation of weather observation facility-- 
Distance of event from weather observation facility (units?)-- 
Time Zone of the weather observationMST 
Lighting ConditionsDay 
Lowest Ceiling Height-- 
Lowest Non-Ceiling Height-- 
Sky/Lowest/Cloud Conditions-- 
Sky Condition for Lowest CeilingBroken 
Visibility Runway Visual Range (Feet)-- 
Visibility Runway Visual Value (Statute Miles)-- 
Visibility (Statute Miles)
Air Temperature at event time (in degrees celsius)-3 
Dew Point at event time (in degress fahrenheit)-6 
Wind Direction (degrees magnetic)240 
Variable Wind IndicatorWind direction could be determined 
Wind Speed (knots)10 
Wind Velocity Indicator -- 
Wind Gust IndicatorNot Gusting 
Wind Gust (knots) -- 
Altimeter Setting at event time (in. Hg) 29.13 
Density Altitude (feet)-- 
Intensity of Precipitation-- 
METAR weather report -- 
Event Highest InjuryNone 
On Ground, Fatal Injuries-- 
On Ground, Minor Injuries-- 
On Ground, Serious Injuries-- 
Injury Total Fatal-- 
Injury Total Minor-- 
Injury Total None185 
Injury Total Serious-- 
Injury Total All-- 
Investigating AgencyNTSB 
NTSB Docket Number (internal use)-- 
NTSB Notification SourceJAC Airport Authority  
NTSB Notification Date-- 
NTSB Notification Time-- 
Fiche Number and/or location -used to find docket information-- 
Date of most recent change to recordJul 2 2012 2:39PM 
User who most recently changed recordschd 
Basic weather conditionsInstrument Meteorological Cond 
FAA District Office-- 
Aircraft Involved
Aircraft #1
Aircraft Registration NumberN668AA 
NTSB NumberDCA11IA015 
Missing Aircraft Indicator-- 
Federal Aviation Reg. PartPart 121: Air Carrier 
Type of Flight Plan filedIFR 
Flight plan Was Activated?Yes 
DamageNone 
Aircraft FireNone 
Aircraft Explosion-- 
Aircraft Manufacturer's Full NameBOEING 
Aircraft Model757-223 
Aircraft Series Identifier-- 
Aircraft Serial Number25333 
Certified Max Gross Weight-- 
Aircraft CategoryAirplane 
Aircraft Registration Class-- 
Aircraft is a homebuilt?No 
Flight Crew Seats-- 
Cabin Crew Seats-- 
Passenger Seats-- 
Total number of seats on the aircraft178 
Number of Engines
Fixed gear or retractable gearRetractable 
Aircraft, Type of Last Inspection-- 
Date of Last Inspection-- 
Airframe hours since last inspection-- 
Airframe Hours-- 
ELT InstalledUnknown 
ELT ActivatedUnknown 
ELT Aided Location of Event SiteUnknown 
ELT Type-- 
Aircraft Owner NameAMERICAN AIRLINES INC 
Aircraft Owner Street AddressPO BOX 619616 MD 5661 
Aircraft Owner CityDFW AIRPORT 
Aircraft Owner StateTX 
Aircraft Owner CountryUSA  
Aircraft Owner Zipcode75261 
Operator is an individual?No 
Operator NameAMERICAN AIRLINES INC 
Operator Same as Owner?Yes 
Operator Is Doing Business As-- 
Operator Address Same as Owner?No 
Operator Street Address-- 
Operator City-- 
Operator State-- 
Operator CountryUSA  
Operator Zip code-- 
Operator CodeAALA 
Owner has at least one certificateYes - certificate holder 
Other Operator of large aircraft?No 
Certified for Part 133 or 137 Operation-- 
Operator Certificate NumberAALA025A 
Indicates whether an air carrier operation was scheduled or notScheduled 
Indicates Domestic or International FlightDomestic 
Operator carrying Pax/Cargo/MailPassenger Only 
Type of Flying (Per_Bus / Primary)-- 
Second Pilot on BoardYes 
Departure Point Same as EventNo 
Departure Airport CodeORD  
Departure CityChicago 
Departure StateIL 
Departure CountryUSA 
Departure Time-- 
Departure Time Zone-- 
Destination Same as Local Flt-- 
Destination Airport CodeJAC  
Destination CityJackson Hole 
Destination StateWY 
Destination CountryUSA 
Specific Phase of Flight-- 
Report sent to ICAO?-- 
Evacuation occurred-- 
Date of most recent change to recordJun 6 2012 4:28PM 
User who most recently changed recordsedj 
Since inspection or accident-- 
Event Location Runway Number and Location19 
Runway Length6300 
Runway Width150 
Sight Seeing flightNo 
Air Medical FlightNo 
Medical Flight--