Air Crash Daily | USAir Flight 427 ATC Recording @AirCrashDaily | Uploaded December 2023 | Updated October 2024, 22 hours ago.
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Accident Description: instagram.com/p/CiP0SibBEky/?igshid=YmMyMTA2M2Y=
Credit: @elsopaipilla315
๐จ๐ฆ๐๐ถ๐ฟ ๐๐น๐ถ๐ด๐ต๐ ๐ฐ๐ฎ๐ณ was a scheduled domestic passenger flight from Chicago to West Palm Beach with a stopover in Pittsburgh. The flight was being operated by a Boeing 737-300 (Reg. N513AU) on ๐ฆ๐ฒ๐ฝ๐๐ฒ๐บ๐ฏ๐ฒ๐ฟ ๐ด, ๐ญ๐ต๐ต๐ฐ.
The plane departed Chicago at 18:10. About 19:02:22 the Pittsburgh TRACON controller issued instructions to turn to a heading of 100ยฐ and told the crew there was other traffic in the area. About 19:02:53, Flight 427 was rolling out of the left bank as it approached the ATC-assigned heading of 100ยฐ and was maintaining the ATC-assigned airspeed (190 knots) and altitude (6,000 feet). About 4 seconds later the plane suddenly entered the wake vortex of Delta Airlines flight 1083, a Boeing 727, that preceded it by 4,2 miles. The first officer then manually overrode the autopilot without disengaging it by putting in a large right-wheel command to level the plane.
At 19:03:01 the plane's heading slewed suddenly and dramatically to the left (full left rudder deflection). Within a second of the yaw onset the roll attitude suddenly began to increase to the left, reaching 30ยฐ. At 19:03:07 the pitch attitude approached -20ยฐ, the left bank increased to 70ยฐand the descent rate reached 3,600 ft/min. At this point, the plane stalled. The plane descended fast and at 19:03:25 the plane impacted the ground nose first at 261 knots in an 80ยฐ nose down, 60ยฐ left bank attitude and with significant sideslip. All 132 people aboard were killed.
๐ฃ๐ฟ๐ผ๐ฏ๐ฎ๐ฏ๐น๐ฒ ๐๐ฎ๐๐๐ฒ:
"The National Transportation Safety Board determines that the probable cause of the USAir flight 427 accident was a loss of control of the airplane resulting from the movement of the rudder surface to its blow down limit. The rudder surface most likely deflected in a direction opposite to that commanded by the pilots as a result of a jam of the main rudder power control unit servo valve secondary slide to the servo valve housing offset from its neutral position and over travel of the primary slide."
Follow us on Instagram: instagram.com/aircrashdaily/?hl=en
Accident Description: instagram.com/p/CiP0SibBEky/?igshid=YmMyMTA2M2Y=
Credit: @elsopaipilla315
๐จ๐ฆ๐๐ถ๐ฟ ๐๐น๐ถ๐ด๐ต๐ ๐ฐ๐ฎ๐ณ was a scheduled domestic passenger flight from Chicago to West Palm Beach with a stopover in Pittsburgh. The flight was being operated by a Boeing 737-300 (Reg. N513AU) on ๐ฆ๐ฒ๐ฝ๐๐ฒ๐บ๐ฏ๐ฒ๐ฟ ๐ด, ๐ญ๐ต๐ต๐ฐ.
The plane departed Chicago at 18:10. About 19:02:22 the Pittsburgh TRACON controller issued instructions to turn to a heading of 100ยฐ and told the crew there was other traffic in the area. About 19:02:53, Flight 427 was rolling out of the left bank as it approached the ATC-assigned heading of 100ยฐ and was maintaining the ATC-assigned airspeed (190 knots) and altitude (6,000 feet). About 4 seconds later the plane suddenly entered the wake vortex of Delta Airlines flight 1083, a Boeing 727, that preceded it by 4,2 miles. The first officer then manually overrode the autopilot without disengaging it by putting in a large right-wheel command to level the plane.
At 19:03:01 the plane's heading slewed suddenly and dramatically to the left (full left rudder deflection). Within a second of the yaw onset the roll attitude suddenly began to increase to the left, reaching 30ยฐ. At 19:03:07 the pitch attitude approached -20ยฐ, the left bank increased to 70ยฐand the descent rate reached 3,600 ft/min. At this point, the plane stalled. The plane descended fast and at 19:03:25 the plane impacted the ground nose first at 261 knots in an 80ยฐ nose down, 60ยฐ left bank attitude and with significant sideslip. All 132 people aboard were killed.
๐ฃ๐ฟ๐ผ๐ฏ๐ฎ๐ฏ๐น๐ฒ ๐๐ฎ๐๐๐ฒ:
"The National Transportation Safety Board determines that the probable cause of the USAir flight 427 accident was a loss of control of the airplane resulting from the movement of the rudder surface to its blow down limit. The rudder surface most likely deflected in a direction opposite to that commanded by the pilots as a result of a jam of the main rudder power control unit servo valve secondary slide to the servo valve housing offset from its neutral position and over travel of the primary slide."
