India, Sept. 5 -- AAIB found the aircraft suffered loss of all hydraulic systems injuring 20 passengers and four crew

The Aircraft Accident Investigation Bureau (AAIB) on Friday released the preliminary report into Air India flight AI 2739 flying Phuket-Delhi, which experienced a loss of altitude, injuring 20 passengers and four cabin crew. Air India, meanwhile, has terminated, with immediate effect, the pilot-in-command the flight after a confirmatory drug test returned positive for a psychoactive substance, the airline said on Friday.

The report notes that the aircraft suffered a near-simultaneous loss of all three hydraulic systems, triggering an autopilot disconnect and a brief stall warning. The aircraft was carrying 145 people, in...