On 9 January 2021, contact was lost with a Boeing 737-500 as it approached 11,000 feet less than five minutes after departing Jakarta in daylight. It was subsequently found to have entered a rapid descent whilst in unexceptional weather conditions and been destroyed by sea surface impact which killed all 62 occupants. The Investigation is ongoing but is currently focusing on finding an explanation for the apparently uncommanded but progressive asymmetric thrust reduction which culminated in a wing drop and a consequent loss of control. An initial recommendation has been made requiring effective Upset Prevention and Recovery Training.