B735, en-route, north northwest of Jakarta Indonesia, 2021

B735, en-route, north northwest of Jakarta Indonesia, 2021

Summary

On 9 January 2021, a Boeing 737-500 was climbing though 10,700 feet less than five minutes after departing Jakarta in daylight when it began to descend at an increasing rate from which no recovery occurred and 23 seconds later was destroyed by sea surface impact killing all 62 occupants. The Investigation concluded that the departure from controlled flight was unintentional and the result of the pilots’ inattention to their primary flight instruments when, during a turn with the autopilot engaged, an autothrottle malfunction created apparently unrecognised thrust asymmetry which culminated in a wing drop and a consequent  loss of control.

Description

On 9 January 2021, a Boeing 737-500 (PK-CLC) being operated by Indonesian carrier Sriwijaya Air on a scheduled domestic passenger flight from Jakarta Soekarno-Hatta to Pontianak as SJ182 ceased responding to ATC calls as it climbed towards FL130 and subsequently descended rapidly and impacted the sea north northwest of Jakarta at high speed which resulted in the destruction of the aircraft as a result of which none of the 62 occupants survived.

The aircraft ground track annotated with times (the green area represents light rain). [Reproduced from the Official Report]

Investigation

An Investigation into the Accident was carried out by the Indonesian Komite Nasional Keselamatan Transportasi (KNKT) otherwise known as the National Transportation Safety Committee (NTSC). A Preliminary Report of the initial progress of the Investigation was released on 10 February 2021.

The full content of this page is available to registered users only.
Please Log in or Register

SKYbrary Partners:

Safety knowledge contributed by: