Indonesia AirAsia Flight 8501 was a scheduled international passenger flight operated by Indonesia AirAsia (an AirAsia Group affiliate) from Surabaya, Indonesia to Singapore. On 28 December 2014, the Airbus A320 flying the route crashed into the Java Sea, killing all 162 people on board. When search operations ended in March 2015, only 116 bodies had been recovered.

In December 2015, the Indonesian National Transportation Safety Committee (KNKT or NTSC) released a report concluding that a non-critical malfunction in the rudder control system prompted the captain to perform a non-standard reset of the on-board flight control computers. Control of the aircraft was subsequently lost, resulting in a stall and uncontrolled descent into the sea. Miscommunication between the two pilots was cited as a contributing factor.