Bad weather was the biggest factor in the crash of AirAsia flight QZ8501, the Indonesian weather
The BMKG agency said initial analysis suggested icy conditions in the air had caused the engine to stall.
The Airbus A320 vanished with 162 people aboard en route from Surabaya in Indonesia to Singapore last Sunday.
The discovery of four large objects believed to be plane debris has raised hopes of finding the fuselage, where most bodies are believed to be trapped.
Just 30 bodies had been recovered from the Java Sea as of Saturday morning.
The plane’s black boxes, its flight data and cockpit voice recorders, have yet to be located. (BBC)