Mumbai: The Federation of Indian Pilots (FIP) has questioned the preliminary investigation report into the Air India Flight AI-171 crash, alleging that key evidence pointing to a possible electrical failure before the loss of both engines was left out.
Addressing a press conference on Friday, FIP President Capt C S Randhawa claimed the Aircraft Accident Investigation Bureau (AAIB) did not include cockpit warning data that could have supported the theory of an electrical malfunction. According to Randhawa, an electrical failure of the kind suspected by the pilots' body would have triggered several caution messages and audio alerts in the cockpit, which should have been captured by the cockpit voice recorder. The pilots' association also questioned why the flight data recorder, located in the tail section of the aircraft, suffered extensive damage despite the tail being found largely intact after the crash. Randhawa noted that the recorder relies entirely on electrical power and suggested the damage could indicate problems with the aircraft's electrical system. FIP said it commissioned 10 tests on a Boeing 787 simulator after the AAIB allegedly declined requests to conduct similar tests. According to Randhawa, the tests showed that the Ram Air Turbine (RAT) - the aircraft's emergency power source - takes around 18 seconds to deploy and restore hydraulic pressure after engine shutdown. He said this contradicts the preliminary report, which suggested the RAT deployed just four seconds after fuel supply to the engines was cut off. Drawing a comparison with the 2009 "Miracle on the Hudson" incident in the United States, Randhawa said investigators initially blamed the pilots before simulator tests proved the crew had made the correct decision. "Here we have captains who have died. No one is there to protect them," Randhawa said. Speaking on the first anniversary of the AI-171 crash, Randhawa also criticised media coverage and the investigation process. "Western media straight away blamed the pilots without any evidence. That immediately made us issue legal notices... how can you speculate and what evidence you have got?" he said. He further alleged that investigators focused on the mental health of Captain Sabharwal instead of supporting his family. "Rather than consoling the family of the pilots, especially Captain Sabharwal, there was intimidation by the AIB," Randhawa claimed. The FIP chief also alleged a lack of transparency in the investigation and claimed the federation feared authorities were attempting to protect aircraft manufacturers. Referring to the sole survivor of the crash, Randhawa said the passenger had reported seeing flickering lights in the cabin after take-off. "The lone survivor said one thing, that after the aircraft was airborne, he saw flickering of lights in the cabin. We corroborated that with electrical malfunctions," he said. The AAIB has not publicly responded to the latest allegations made by the pilots' body.