Indian aviation authorities will postpone releasing their final investigation report into a fatal Air India Boeing 787 crash past the one-year anniversary this Friday, as they continue analyzing the aircraft’s engines, according to a source familiar with the investigation.
The following timeline details the tragic sequence of events on June 12, 2025, as documented by Indian investigators in their report released July 12 last year:
05:47 GMT (11:17 a.m. local time) – Air India Dreamliner VT-ANB touched down in Ahmedabad after flying from New Delhi on flight AI423.
07:48:38 GMT – The plane was seen leaving Bay 34 at the airport.
07:55:15 GMT – The aircraft requested permission to taxi, receiving approval from air traffic control. One minute later, the plane moved from the bay to Runway 23 using Taxiway R4, then backtracked and positioned for departure.
08:02:03 GMT – Control was transferred from ground to tower personnel.
08:07:33 GMT – Tower cleared the aircraft for takeoff.
08:07:37 GMT – The plane began its takeoff roll.
08:08:39 GMT – The aircraft became airborne. “The aircraft air/ground sensors transitioned to air mode, consistent with liftoff,” investigators noted.
08:08:42 GMT – The plane hit its maximum speed of 180 knots. “Immediately thereafter, the Engine 1 and Engine 2 fuel cutoff switches transitioned from RUN to CUTOFF position one after another with a time gap of 01 sec.”
“The Engine N1 and N2 began to decrease from their take-off values as the fuel supply to the engines was cut off.
“In the cockpit voice recording, one of the pilots is heard asking the other why did he cutoff.
“The other pilot responded that he did not do so.
“The CCTV footage obtained from the airport showed Ram Air Turbine (RAT) getting deployed during the initial climb immediately after lift-off.
“The aircraft started to lose altitude before crossing the airport perimeter wall.”
08:08:47 GMT – Both engines dropped “below minimum idle speed,” and the RAT hydraulic pump started providing hydraulic power.
08:08:52 GMT – Engine 1’s fuel cutoff switch moved from CUTOFF back to RUN.
08:08:56 GMT – Engine 2’s fuel cutoff switch also returned from CUTOFF to RUN.
“When fuel control switches are moved from CUTOFF to RUN while the aircraft is inflight, each engines full authority dual engine control (FADEC) automatically manages a relight and thrust recovery sequence of ignition and fuel introduction.”
“Engine 1’s core deceleration stopped, reversed and started to progress to recovery. Engine 2 was able to relight but could not arrest core speed deceleration and re-introduced fuel repeatedly to increase core speed acceleration and recovery.”
08:09:05 GMT – A pilot broadcast “MAYDAY MAYDAY MAYDAY.”
08:09:11 GMT – Data recording ceased.
08:14:44 GMT – Emergency fire and rescue vehicles departed the airport for the crash site.
