NG 004
26 May 1991 · System & Design MalfunctionLAUDA AIR FLIGHT 004
Boeing 767-300ER · Lauda Air · Image: Wikimedia Commons
Why it happened
Thrust reverser deployed in flight
Thrust reverser deployment logic
Directional control
Hydraulic isolation
Aircraft
Boeing 767-300ER
Lauda Air
Route
Bangkok–Don Mueang (DMK), Thailand
→ Vienna (VIE), Austria
People
223 on board
223 fatalities
Date
26 May 1991
Flight crew
Captain: Thomas Welch
Category
System & Design Malfunction
When software, sensors and design turn on the crew.
THE STORY
A thrust reverser deployed in the climb. The 767 went supersonic in its dive and broke apart over the Thai jungle.