'Screaming' alarms drowned out AirAsia pilots' voices

ALARMS on an AirAsia flight that crashed into the Java Sea last month were "screaming" and drowned out the voices of pilots, an investigator says.

The un-named investigator told Agence France-Presse the alarms were "screaming" as pilots struggled to right flight QZ8501 before it plunged into the water.

Investigators are examining the two black boxes recovered from the Airbus 320-200, but the main body of the aircraft has not been recovered.

Indonesian Transport Minister Ignasius Jonan said on Wednesday the plane had climbed abnormally before stalling and hitting the ocean with 162 people on board in late December.

While investigations are still underway, AFP said one unidentified investigator said alarms on board the aircraft were going off "for some time" before the crash.

An interim report on the investigation into the crash that left 157 Indonesians and seven foreign nationals dead is due next week.