On Tuesday, July 8, Aircraft Accident Investigation Bureau (AAIB) submitted its preliminary report on the AI171 plane crash. The report was sent to the ministry of civil aviation and the concerned authorities. The Boeing 787-8 Dreamliner, bound for London Gatwick (LGW) from Ahmedabad (AMD), had crashed shortly after takeoff on June 12.
Also read: Ahmedabad Air India Plane Crash: Heartbreaking Stories of 241 Victims
The Investigation team
Ever since the crash, AAIB has been conducting a full-scale investigation. The bureau is being assisted by the ministry of civil aviation. The investigation team comprises experts from the Indian Air Force, Hindustan Aeronautics Limited (HAL), and the U.S.-based National Transportation Safety Board (NTSB). It also includes officials from Boeing, GE, aviation medicine specialists, and Air Traffic Control experts.
The inquiry follows international norms. These are laid out in ICAO Annex 13. They are also specified in India’s Aircraft (Investigation of Accidents and Incidents) Rules, 2017.
Causes of Crash from Preliminary Report
This preliminary report summarises initial findings of the investigation. The flap and slat configurations, runway usage, and initial climb appeared normal based on video and photographic evidence. Officials say the cause is still under review, but key indicators point toward a possible systems failure shortly after takeoff. The landing gear did not retract as expected. Indicators suggest the emergency power generator engaged. This action typically occurs only in case of significant electrical or hydraulic failure.
The Crash Protection Module from one of the plane’s black boxes was retrieved and accessed by June 25. Its data has been successfully downloaded. An identical black box is known as a “golden chassis”. It was used to confirm whether the data could be accurately retrieved from the original black boxes.
PAC Meeting
A crucial meeting of Parliament’s Public Accounts Committee (PAC) is scheduled today too. Top officials from the civil aviation ministry will attend. The attendees include the civil aviation secretary and the Director General of Civil Aviation (DGCA). Its agenda will possibly include the Boeing-787 crash. But the main objective is discussion over passenger fees, airline charges, and other tariffs for public infrastructure and airport services.
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