Union minister Murlidhar Mohol on Saturday said the Aircraft Accident Investigation Bureau (AAIB)'s report on the Ahmedabad plane crash was a preliminary one and conclusions cannot be drawn based on it as the conversation between the pilots was very brief, reported PTI.

The Minister of State for Civil Aviation was talking to reporters in Pune about the investigation into the June 12 plane crash.

The London-bound Boeing 787 Dreamliner crashed into a medical college hostel in Ahmedabad moments after taking off from the city airport, killing all but one of the 242 onboard and another 19 on the ground in the deadliest aviation accident in a decade.