New Delhi, July 2 -- Nearly 20 days after the Air India crash in Ahmedabad killed 270 people including 241 on board, Aircraft Accident Investigation Bureau (AAIB) is likely to release a preliminary probe report by next week.

The document, which is likely to be four to five pages long, will be crucial because it will provide initial insights into the crash on June 12, including the possible causes, sources said here on Tuesday.

As per International Civil Aviation Organisation (ICAO) guidelines, India is required to file a preliminary report within 30 days of the crash. The complete probe report is expected in roughly two months from now, which would be three months from the day of the crash. Sources said the preliminary report will inclu...