False stall warning leads to emergency landing of Airbus A320

No fatalities • New York-JFK, United States of America • Takeoff (climb)

An Airbus A320 experienced an uncommanded stick shaker activation during takeoff, leading to an emergency landing and several injuries.

What happened

During the takeoff roll of an Airbus A320, the aircraft's stick shaker activated immediately after leaving the ground. The first officer, who was acting as the pilot flying at the time, believed the aircraft was entering a stall and verbally signaled the captain to take over. Upon assuming control, the captain reduced thrust and initiated an emergency landing. To prevent a collision with a barrier located at the runway's end, the captain utilized maximum braking and full reverse thrust, eventually steering the aircraft off the runway.

All 292 occupants were successfully rescued from the aircraft. Among the passengers and crew, 10 injuries were reported, with one individual sustaining serious injuries.

Findings

Investigations into the incident identified a system design deficiency involving an angle of attack (AOA) sensor. This specific sensor had malfunctioned on nine prior occasions; however, following previous inspections, it had been returned to service without a definitive resolution regarding the cause of its intermittent failures. This faulty sensor provided erroneous data that triggered the false stall warning. Additionally, the crew's response was impacted by a lack of proper coordination during the transfer of control, as the first officer's perception of the stall led to an uncoordinated handoff to the captain.

Probable cause

A malfunctioning angle of attack sensor triggered a false stall warning, compounded by uncoordinated control transfer between the flight crew.

Frequently asked questions

What happened in the 1992-07-30 Lockheed L-1011 TriStar accident near New York-JFK, United States of America?

An Airbus A320 experienced an uncommanded stick shaker activation during takeoff, leading to an emergency landing and several injuries.

Were there any fatalities in the 1992-07-30 Lockheed L-1011 TriStar accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 1992-07-30 involved a Lockheed L-1011 TriStar, registration N11002, operated by Trans World Airlines - TWA, at New York-JFK, United States of America.

What was the probable cause of the accident?

A malfunctioning angle of attack sensor triggered a false stall warning, compounded by uncoordinated control transfer between the flight crew.

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