India, July 13 -- The preliminary report into the crash of the Air India Ahmedabad to London flight on June 12 was released exactly one month after the disaster on Saturday.

The AAIB report gave significant insights into what happened in the minutes and seconds leading up to the crash that took 260 lives, including 241 of the 242 people onboard. But it also deepened some mysteries.

Here are some questions it answered, and some it didn't.

Both engine fuel switches "transitioned from RUN to CUTOFF position one after another with a time gap of 01 sec", roughly three seconds after the plane lifted off. This cut fuel supply to both engines, causing loss of power and, therefore, lift. However, the report doesn't determine what caused the swi...