AI-171: A year on, no cause, no closure

The Aircraft Accident Investigation Bureau (AAIB) is expected to release a status update on the investigation into the crash of Air India flight 171, nearly a year after the accident. The update will set out the work completed so far and the areas still under examination, but it will not establish the cause of the accident. The investigation has been ongoing for a year, and the AAIB is required to publish a final report or a progress update under International Civil Aviation Organization rules.