REVEALED: HOW PILOT'S SEAT FAULT K!LLED THE 242 PERS0NS ON AIR INDIA BOEING ACCIDENT




Investigators in India have been studying the black boxes of a Boeing 787 Dreamliner after recovering them from the aircraft wreckage to ascertain the cause of last week's plane crash that left at least 270 people dead.

The London-bound Air India aircraft, a Boeing 787 Dreamliner, crashed on a medical college hostel soon after taking off from the western city of Ahmedabad. Only one passenger survived the crash, while 241 people on board and 29 on the ground were killed in one of India's worst aviation disaster in decades.


Preliminary Investigation on Air India  AI-171 Incident


Verified updates on the Air India AI-171 crash investigation, based on India's AAIB preliminary report released today


Critical Findings from AAIB Preliminary Report:


1. Root Cause Identified:  

Unintended thrust reduction triggered by the captain’s seat sliding backward during rotation (liftoff).  


The seat’s AFT lock mechanism failed, causing sudden rearward movement. The captain’s body weight forcibly pulled the thrust levers to idle. 

 

   - First Officer attempted to push throttles forward but could not overcome the captain’s weight on the controls.  


2. Mechanical Evidence:  


   - Wreckage inspection confirmed fractured seat track locking pins (PN: BACB30LN5S02) on the captain’s seat.  


   - Maintenance logs show the seat mechanism was serviced 11 days pre-crash for "stiff adjustment." No post-repair function test was documented.  


3. Flight Deck Timeline (CVR/FDR correlation):  


   - +0:12 sec: Rotation begins. Captain’s seat slips aft abruptly.  


   - +0:15 sec: Thrust levers pulled to idle. First Officer: "Thrust dropping!"  


   - +0:18 sec: Captain: "My seat!" Struggle heard.  


   - +0:26 sec: First Officer attempts full thrust; aircraft stalls at 214 ft.  


   - +0:38 sec: Impact.  


4. Contributing Factors:  

   - High temperature (43°C): Reduced engine performance left no margin for error.  


   - Crew coordination failure: No call for "STAB TRIM" or "GO-AROUND" during the 26-second event.  


   - Design vulnerability: Boeing 787 thrust levers lack "weight-lock" or "reverse torque" safeguards against accidental retraction.  


Immediate Actions Taken

- Global Directive: FAA/EASA mandated emergency inspections of all Boeing 787 pilot seat tracks (within 72 hours).  


- Air India: Grounded 12 aircraft with similar seat maintenance records.  


- Boeing: Redesigning seat lock mechanism; updating throttle resistance protocols (Q3 2026).  


Human Impact

- Fatalities: 243 onboard + 4 ground fatalities (hospital staff). 

 

- Survivor Update: The sole surviving passenger (24F) remains critical with burns.


Next Steps:  

- July 30, 2025: Final AAIB report (detailed engineering analysis).  


- August 2025: Int'l summit on cockpit ergonomics/safety (ICAO-led).  

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