KNKT Final Report: Indonesia Air Asia Airbus A320-216 (PK-AXC) in the Karimata Strait

Overview of the Investigation Report The Komite Nasional Keselamatan Transportasi (KNKT) issued a final aircraft accident investigation report for an Indonesia Air Asia Airbus A320-216, registration PK-AXC, that occurred in the Karimata Strait, Republic of Indonesia, on 28 December 2014. The report was produced by the KNKT in accordance with Annex 13 to the Convention on International Civil Aviation, the Indonesian Aviation Act (UU No. 1/2009), and Government Regulation (PP No. 62/2013). ## Scope and Safety Purpose The KNKT states that its investigations are conducted solely to enhance aviation safety. The report is confined to matters of safety significance and is not intended to imply blame or liability. Readers are encouraged to copy or reprint the report for further distribution, acknowledging the KNKT as the source. ## Report Structure The final report includes factual information, analysis, and conclusions. Factual information covers the history of flight, injuries to persons, damage to the aircraft, personnel information, aircraft information, meteorological information, aids to navigation, communications, aerodrome information, flight recorders, wreckage and impact information, medical and pathological information, fire, survival aspects, tests and research, and organisation and management information. ## Aircraft and Systems The aircraft was an Airbus A320-216 with registration PK-AXC. The report details aircraft systems, including the flight control system, control law, lateral consoles, rudder travel limitation, and the Flight Augmentation Computer (FAC). Maintenance history related to the Rudder Travel Limiter Unit (RTLU) is also discussed, including maintenance reports, defect handling, and reliability reports. ## Flight Recorders and Analysis The report includes information from the Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR), with selected significant events based on these recorders. The analysis section addresses un-commanded aircraft roll, electrical interruption, RUD TRV LIM SYS message handling, side stick inputs, pilot recognition of stall, crew resource management, and maintenance handling on aircraft system problems.