Date: March 22, 1992
Time: 21:35
Location: La Guardia Airport, New York, New York
Operator: USAir
Flight #: 405
Route: New York City - Cleveland
AC Type: Fokker F-28 Fellowship 4000
Registration: N485US
cn / ln: 11235
Aboard: 51   (passengers:47  crew:4)
Fatalities: 27   (passengers:25  crew:2)
Ground: 0
Summary: The plane was de-iced two times while at the gate. Thirty-five minutes elapsed between the last de-icing and takeoff during which ice accumulated on the wings. After liftoff, the plane stalled, crashed and came to rest inverted and partially submerged in Flushing Bay. Failure of the airline industry and FAA to provide flight crews with procedures compatible with departure delays in conditions conducive to airframe icing and the decision by the flight crew to take off without positive assurance that the airplane's wings were free of ice accumulation after 35 minutes of exposure to precipitation following de-icing. The ice contamination on the wings resulted in an aerodynamic stall and loss of control after liftoff.

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