India's Aircraft Accident Investigation Bureau (AAIB) is yet to decide whether flight data and cockpit voice recorders from the Air India flight that crashed last Thursday will be sent overseas for decoding and analysis.

Air India cancelled eight flights, including four international, due to operational reasons amid a 20% drop in bookings following the Ahmedabad plane crash.

The move came a day after Indian officials told the airline to improve its operations, and as delays and canceled flights are drawing complaints from passengers.