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By Daniel Baxter (see NTSB Update On Jackson Hole B-757 Runway Overrun Incident) |
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December 31, 2010 - The National Transportation Safety
Board has opened an investigation into an incident in
which a passenger jetliner that had landed at
At
about 11:38 AM MT on Thursday, American Airlines Flight
2253, a B-757 (N668AA) inbound from Chicago O'Hare
International Airport, ran off the end of runway 19
while landing at The pilot reported that the braking system failed. Flight 2253 continued down the runway, passing the end of the runway and through the runway overrun area which was 300 feet. The aircraft finally came to rest about 350 feet from the overrun area in hard packed snow. |
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The pilot
came on the intercom to reassure passengers that they were ok
and stated that the brakes weren?t working properly. Airport
officials brought in heavy plows and airport workers began
plowing an area around the Boeing 757. A portable staircase and
buses were brought in and it took just under an hour before all
181 passengers and crew were able to disembark the aircraft.
Aircraft can and do overrun the ends of runways, sometimes with devastating results. An overrun occurs when an aircraft passes beyond the end of a runway during an aborted takeoff or while landing. To minimize the hazards of overruns, the Federal Aviation Administration (FAA) incorporated the concept of a safety area beyond the runway end into airport design standards called ?runway overrun area?. To meet the standards, the safety area must be capable, under normal (dry) conditions, of supporting the occasional passage of aircraft that overrun the runway without causing structural damage to the aircraft or injury to its occupants. The safety area also provides greater accessibility for emergency equipment after an overrun incident. There are many runways, particularly those constructed prior to the adoption of the safety area standards, where natural obstacles, local development, and/or environmental constraints, make the construction of a standard safety area impracticable. |