?On September 8, 1994, about 1903:23 eastern daylight time, USAir (now US Airways) flight 427, a Boeing 737-3B7 (737-300), N513AU, crashed while maneuvering to land at Pittsburgh International Airport, Pittsburgh, Pennsylvania.

USAir Flight 427 was a scheduled flight from Chicago's O'Hare International Airport to Palm Beach International Airport, Florida, with a stopover at Pittsburgh International Airport.

National Transportation Safety Board

On September 8, 1994 at approximately 1903 Eastern Daylight Time, USAir Flight 427, a regularly scheduled revenue flight from Chicago, Illinois to Pittsburgh, Pennsylvania, crashed while approaching the Greater Pittsburgh International Airport. HISTORY OF USAIR FLIGHT 427

The upsets of USAir flight 427, United flight 585, and Eastwind flight 517 were most likely caused by the movement of the rudder surfaces to their blowdown limits in a direction opposite to that commanded by the pilots.

Abstract: This report explains the accident involving USAir flight 427, a Boeing 737-300, which entered an uncontrolled descent and impacted terrain near Aliquippa, Pennsylvania, on September 8, 1994.

USAir Flight 427, a Boeing 737-300, crashed following a loss of control during the approach to Pittsburgh International Airport, Pennsylvania, USA. All 132 on board were killed. The flight departed Chicago-O'Hare International Airport, Illinois at 18:10 hours on a flight to Pittsburgh.

As a result of the investigation of the USAir flight 427 accident, the National Transportation Safety Board makes the following recommendations to the Federal Aviation Administration: Require that all existing and future Boeing 737s have a reliably redundant rudder actuation system.

On September 8, 1994, USAir Flight 427, a Boeing 737-300, crashed while maneuvering to land at Pittsburgh International Airport. The airplane was being operated on an instrument flight plan under 14 CFR Part 121 on a regularly scheduled flight from Chicago, Illinois.

It took 28 seconds for USAir Flight 427 to plummet from the sky. It took the National Transportation Safety Board five years to figure out why.