When a preliminary report on the AIR India Flight 171’s crash in June was released in June, many people hoped to bring some closures.
Instead, the 15 -page report added fuel to the storm of speculation. Despite the measurement tone of the report, one details continue to bother the investigators, aviation analysts and the public.
A few seconds after takeoff, the 12 -year -old Boeing 787 fuel control switch suddenly moved to “cut off”, cutting the fuel to the engine and causing total power loss.
The cockpit voice recording asks another pilot to another pilot “why did it cut off”. Recording does not clarify who says. At the time of takeoff, the assistant was flying aircraft while the captain monitored.
The switch went back to the normal patience and triggered the automatic engine Ray Light. At the time of the crash, one engine regained his thrust and the other engine was relieved, but it has not yet recovered. The plane took less than a minute before colliding with the neighborhood of Ahmedabad, the western Indian city.
After the preliminary report, some speculative theories have emerged. The entire report is expected in about a year.
The Wall Street Journal (WSJ) and Reuters agency said, “The new details on the investigation of the Air Indian crash last month are changing to the cockpit’s senior pilot.”
The Italian newspaper Corriere Della Sera insisted that the source repeatedly asked them why the first officer “closed the engine”.
The 56 -year -old Sabharwal was a captain in the flight, and the 32 -year -old CLIVE KUNDER was a flight assistant. The two pilots have more than 19,000 hours of flight experience, and there are almost half of BOEING 787. Both passed all health tests before flight before the conflict.
Naturally, the waves of speculative leaks were angry with the investigators and an angry Indian pilot.
Last week, the Indian Aircraft Accident Investigation Bureau (AAIB) said that the international media’s specific sections are attempting to conclude repeatedly through optional and unproven reports.
Jennifer Homendy, chairman of the National Transportation Safety Board (NTSB), who is helping to investigate, said in X that the media report is “early and speculative and takes time to investigate this scale.”
The Indian Commercial Pilots’ Association, who returned to India, blamed the crew as “reckless” and “deeply meaningless”, calling for a restriction until the final report was released.
Sam Thomas, head of the Airline Pilot Association, told the BBC that “speculation of transparency has become transparent.”
At the heart of the debate is the simple cockpit record of the report. The total report cards expected in the final report should be more clearly light of what really happened.
Headquartered in Canada without a name, airline accident investigator said that it suggests various possibilities in the report.
For example, “the pilot ‘B’ is a switch and unconsciously or unconsciously operating the switch, you can understand that it will refuse to work later.”
“But if the pilot ‘A’ intentionally runs a switch, you will know that the cockpit voice recorder aims to avoid identification as a careful investigation, attention and responsible person.
“Even if AAIB can eventually decide what to say, it doesn’t answer the question,” Who turns off fuel? “
“We may never know the answer to that question.”
Investigators said the BBC seemed to have strong evidence that the fuel switch was manually turned off, but it is still important to maintain an open mind.
The defects of the entire permanent digital engine control (FADEC) system of the plane, which monitors engine health and performance, theoretically, some pilots suggest that automatic termination can be triggered if it is detected from the sensor.
But if there is an exclamation point of the pilot, ‘Why Cut Off?’ -After the switch moves to the cutoff (as mentioned in the preliminary report), it will undermine the theory. In the final report, you can clarify this with detailed analysis of the time of time and the engine data.
What did you say and what you did not say, more speculation was promoted by more.
The preliminary report has withheld the total cockpit voice recorder (CVR) reporting card and has only released one line from the last minute.
This selective disclosure is questionable. The survey team had confidence in the speaker’s identity, but did the rest decided to withheld the sensitivity? Or is it still uncertain about who needs more time to fully investigate the problem before posting a conclusion?
Peter Goelz, former director of NTSB, said AAIB should announce a voice recorder warrior with a pilot voice.
“If the malfunction begins during the takeoff, it will be recorded in the FLIGHT DATA Recorder (FRD) and it would have caused warnings in the flight management system. The crew would have been almost sure.”
Investigators call for redemption to conclude.
“If the switch is turned off, we must be careful because it assumes intentional behavior -pilot error, suicide or something else. And it is a dangerous way to go down to the limited information we have.”
At the same time, alternative theory continues to circulate.
Indian newspapers, including the Indian newspaper, indicated the Indian Express, the main focus of an electric fire that was possible in the tail. However, according to the preliminary report, the engine ended due to the fact that the two fuel switches moved to the cutoff and were supported by recorder data. If a tail fire occurred, the spilled fuel or battery would have had a damaged influence, the independent investigator said.
Last week, AAIB’s GVG Yugandhar stressed that the preliminary report aims to provide information about what happened.
He said, “It is too early to conclude.” He is undergoing an investigation and the final report will identify the “root cause and recommendation.” He also promised to share an update on “technical or public interests.”
Pruchnicki summarizes that Probi is summarized as “two possibilities of intentional behavior, confusion, and automation.”
“This report does not rush to blame human errors or intentions, and there is no evidence that it was intentionally performed.”
In other words, there is no smoking gun. Just wait for an answer that may not appear completely.
