Prior to service with Adam Air, the plane had flown for seven other airlines: Dan-Air, British Airways, GB Airways, National Jets Italy, WFBN, Air One, and Jat Airways, carrying four different registration numbers, including PK-KKW. The aircraft, a Boeing 737-4Q8, registration PK-KKW, was manufactured in 1990. 9.2 Alleged Cockpit Voice Recording LeakageĬG render of Adam Air's PK-KKW Boeing 737-4Q8.
Adam Air was subsequently banned from flying by the Indonesian government, and would later declare bankruptcy. The crash is one of several transportation accidents, including the subsequent non-fatal crash of Adam Air Flight 172, which between them have resulted in large-scale transport safety reforms in Indonesia, as well as the United States downgrading its safety rating of Indonesian aviation, and of the entire Indonesian fleet being added to the list of air carriers banned in the EU. The final report, released on 25 March 2008, concluded that the pilots lost control of the aircraft after they became preoccupied with troubleshooting the inertial reference system and inadvertently disconnected the autopilot. Debris location has indicated that the plane likely struck the ocean intact. Another possibility proposed by the families of some of the deceased is that the crash was due to a faulty rudder valve, known to have caused previous accidents and incidents on Boeing 737s.
Ī full national investigation was immediately launched into the disaster, uncovering multiple maintenance issues concerning the airline as a whole, including a large number concerning the aircraft. This is the highest death toll of any aviation accident involving a Boeing 737-400. The flight recorders ("black boxes") were retrieved from the ocean on 28 August 2007, while salvage efforts for some larger pieces of wreckage continued. The plane, a Boeing 737-4Q8, was ultimately determined to have crashed into the ocean, from which some smaller pieces of wreckage have been recovered.
Adam Air Flight 574 ( KI-574) was a scheduled domestic passenger flight operated by Adam Air between the Indonesian cities of Surabaya (SUB) and Manado (MDC) that disappeared near Polewali in Sulawesi on 1 January 2007.