A computer fault and subsequent crew actions were among the factors that led to the crash of an AirAsia flight that killed all 162 people on board last year, Indonesia's transport safety committee says.
Repeated problems with a rudder control system led to the pilots disengaging the autopilot in stormy weather in a bid to fix the situation, and then losing control of the Airbus A320-200, Indonesia's National Transportation Safety Committee said.
The committee released its final report on Tuesday after a year-long investigation.
"Subsequent flight crew action resulted in an inability to control the aircraft ... causing the aircraft to depart from normal flight envelope and enter a prolonged stall condition that was beyond the capability of the flight crew to recover," the report said.
Flight QZ8501 was en route from Surabaya, Indonesia, to Singapore when it crashed into the Java Sea on December 28, 2014.