Leaks within the western media with particular particulars about technical points and ‘human intervention’ regarding the crash of Air India flight AI 171 have led to a written enchantment by the Director-General of India’s Aircraft Accident Investigation Bureau (AAIB), Ministry of Civil Aviation, Government of India, to await the publication of the ultimate investigation report. The leaks got here days earlier than the discharge of the AAIB’s preliminary report on July 12, a month after the air accident at Ahmedabad on June 12.
What else has the AAIB’s enchantment stated? What are the opposite reactions?
The letter, dated July 17 and signed by G.V.G. Yugandhar, Director-General, AAIB, stated that the AAIB works in accordance with the Aircraft (Investigation of Accidents and Incidents) Rules 2017, and is liable for fulfilling the obligations of the Government of India in direction of the International Civil Aviation Organization Annex 13. It highlighted “its flawless document within the investigation of 92 accidents and 111 critical incidents since its inception in 2012”. The assertion drew consideration to sure sections of the worldwide media repeatedly trying to attract conclusions via selective and unverified reporting and known as such actions irresponsible. It added that the AAIB’s investigation and preliminary report are to supply details about “what” occurred, and that the ultimate report would come out with root causes and proposals. It added that the AAIB would publish updates as and when required, which have technical and public curiosity.
On July 18, in a press release on X, the U.S. National Transportation Safety Board (NTSB) Chairwoman Jennifer L. Homendy stated that “latest media experiences on the Air India 171 crash are untimely and speculative…”, ending with “investigations of this magnitude take time. We totally help the AAIB’s public enchantment….”
Days earlier than the AAIB launched a 15-page preliminary report, aviation information service The Air Current had a report on July 8. It stated “Air India crash investigation focuses on motion of engine gasoline management switches” with a blurb that “information from the Dreamliner’s black field factors investigators in direction of improper, inadvertent or intentional pilot actions”. On July 10, the Wall Street Journal (WSJ) had a report, “Air India probe Puts Early Focus on Pilots’ Actions and Plane’s Fuel Switches”. Again, on July 17, theWSJ had an unique report titled “New Details in Air India Crash Probe Shift Focus to Senior Pilot”. On July 18, an Italian day by day, the Corriere della Sera (based in 1876), revealed a report which claimed it had extra particulars from the cockpit voice recorder (CVR).
The experiences within the western media have led to a pushback by Indian pilot our bodies. A media report has stated that the Federation of Indian Pilots would “pursue all authorized cures obtainable for defamation, psychological anguish and reputational hurt”. The International Federation of Air Line Pilots’ Associations additionally cautioned in opposition to hasty conclusions revealed by the media and social media primarily based on the preliminary report.
What has the preliminary report stated?
The report has centered on the “engine 1 and engine 2 gasoline cutoff switches having transitioned from Run to Cutoff place, one after one other with a time hole of 1 second”, ensuing within the gasoline provide slicing off. There can be one sentence which says that within the “cockpit voice recording, one of many pilots is heard asking the opposite why did he cutoff. The different pilot responded that he didn’t achieve this.” The report has an image of the plane with its Ram Air Turbine — which is on the coronary heart of an plane’s emergency energy system — having deployed in the course of the preliminary climb.
The engine 1 gasoline cutoff change then transitioned from Cutoff to Run about 10 seconds after the cutoff, resulting in a thrust restoration. Four seconds later, an analogous transitioning for the engine 2 gasoline change led to the complete authority digital engine management of every engine robotically managing a relight and thrust restoration sequence. One of the pilots then transmitted a Mayday name.
The report has stated that it has no beneficial actions regarding the plane sort, the engine (GE’s GEnx-1B70/P2), and the producers — this has drawn criticism from pilot our bodies for ignoring ‘systemic vulnerabilities’.
The report’s lack of a full and uncooked CVR transcript with timestamps is what has drawn essentially the most criticism.
The coronary heart of the thriller now lies within the actions across the handbook gasoline selector switches.
Captain Matthew Buckley, a former U.S. Navy fighter pilot and a former first officer at FedEx and American Airlines, has informed The Hindu that the Boeing 787 is a data-linked, extremely networked plane, with its essential flight programs — particularly gasoline administration — digitally and bodily remoted. Even although the plane makes use of Ethernet-style spine programs for a lot of avionics features, the gasoline selector switches themselves are mechanical-electrical hybrids that can not be remotely accessed or altered from exterior. He provides that had there been any software program anomaly, Boeing and the engine producer would have detected it via Aircraft Health Monitoring Systems. These programs document and transmit real-time diagnostics, he stated.
He stated that the Boeing 787 has centralised digital programs and information streaming to floor programs in actual time. If there was an engine-related situation, both mechanical or systems-based, the engine producer would know immediately, as diagnostic updates could be despatched throughout flight.
What are the security checks being carried out by airways?
Last month, on June 13, the Directorate General of Civil Aviation (DGCA) directed Air India to hold out further security inspections on its Boeing 787-8 and 787-9 fleet. Professor Guy Gratton, Associate Professor of Aviation and the Environment, Faculty of Engineering and Applied Science at Cranfield University, UK., has informed The Hindu that these suggest enhanced checks of {the electrical}, hydraulic and/or propulsion programs.
The DGCA has additionally issued a directive (with inspection experiences by July 21, 2025) to test the locking mechanism of the gasoline management switches on the Boeing 737 and 787. A lot of airways have carried out precautionary checks of the gasoline selector switches of their Boeing 787 fleets. They embody Singapore Airlines and Scoot (Singapore), Qantas (Australia), Etihad (UAE), Korean and Japan. This additionally flows from an advisory by the U.S. Federal Aviation Administration (FAA) in 2018 of the ‘potential for disengagement of the gasoline management change locking characteristic’ on a number of Boeing plane households. Separately, Indian pilot our bodies have urged intensive checks of the 787’s engine management programs.
How many 787s are there on this planet?
In an electronic mail reply to The Hindu, Boeing has stated that the worldwide Boeing 787 fleet contains over 1,175 plane, having operated practically 5 million flights and logged greater than 30 million flight hours.
Can there be a greater investigation?
In an interview with Singapore’s media on July 16, whereas commenting on the AAIB’s preliminary report, International Air Transport Association chief Willie Walsh stated that there’s a sturdy argument to be made for video recorders to be put in in plane flight decks to assist accident investigators. This revives an virtually 25-year-old debate on the difficulty between the NTSB and the FAA.
The last line is that there must be a good and clear investigation with irrefutable findings. And this might take time.
