AI171 Crash: Two Fuel Switches, FAA Warning, and a Storm of Unanswered Questions

As the preliminary report on the Air India Flight AI171 crash begins circulating, a storm of aviation commentary has erupted online-with veteran pilots, engineers, and frequent fliers weighing in on what many are calling one of the most perplexing and tragic aviation incidents in recent memory.

At the heart of the crash: the sudden, near-simultaneous switch of both engine fuel control switches from 'RUN' to 'CUTOFF'-just seconds after takeoff-leading to dual engine failure and the deaths of all 260 on board.

"It Had to Be Deliberate" - Or Was It a System Glitch?

One user posted bluntly: "Pretty sure it was suicide. The switches are secured so that you can't 'accidentally' flip them. It was deliberate, IMO."

Another user wrote, "Without a major malfunction, there's no reason to even reach for those switches. This was very intentional."

However, others are not so sure.

One user cited discrepancies in timing recorded by the aircraft's Electronic Aircraft Flight Recorder (EAFR), suggested the system might have misread the actual physical positions of the switches: "It took just one second to go from RUN to CUTOFF, but four seconds to go back. That's unusual. My suspicion is the system misinterpreted the signals."

"Why Did You Cut Off?" - Haunting Cockpit Recording

The report confirmed a chilling exchange from the cockpit. One pilot asks, "Why did you cut off?" to which the other responds, "I didn't." This dialogue, coupled with the timing of the switch flips, has left investigators and observers questioning whether the switches were triggered manually-or if a deeper fault exists in the plane's systems.

Known Switch Risk, Ignored Advisory

Aviation enthusiasts and professionals quickly linked the incident to FAA Special Airworthiness Information Bulletin (SAIB) NM-18-33, which had warned in 2018 of a potentially faulty locking mechanism on fuel control switches used in Boeing aircraft.

Air India confirmed the aircraft-VT-ANB-was equipped with the same model of switches flagged in the bulletin (P/N 4TL837-3D), yet no inspection had been done since the advisory was non-mandatory.

One user pointed out that the throttle control module on the same aircraft had been replaced twice, in 2019 and 2023. "Why was this done? And is there no link between that module and the fuel switch behavior?" he asked.

Another added, "This accident illustrates the risks of ignoring even advisory-level warnings when it comes to critical engine controls."

Design Flaws? Calls for Cockpit Cameras, Software Updates

Many questioned Boeing's design choices. Nicholas Cyl, a long-time commercial pilot, said: "Why aren't these switches guarded? Even if you have to pull to flip, a guard would prevent accidental or rushed activation." Chris O'Neill added, "It's a serious design flaw that this is even possible without the thrust levers at idle."

Desmond Carnegie, reflecting on his time with Embraer aircraft, suggested, "Boeing should add a logic layer-like in the EMB145-where you can't shut off fuel unless levers are at idle. It's just a few lines of code."

Others called for cockpit cameras to become standard equipment. "Voice recordings are no longer enough," said Adel Ibrahim Lathram. "There needs to be visual verification for moments like this."

Trust Issues and Speculation About Boeing
Some expressed concern that the blame would fall squarely on the pilots without full transparency. Kate Ēnigma, a top fan, posted: "India tends to blame pilots, and Boeing has a history of covering up. Can we fully trust what's been reported so far?"

She added, "The CVR and DFDR data should be made public. Was this truly pilot error? Could it have been a software or systems issue? We just don't know yet."

What We Know So Far

At 08:08:42 UTC, both engine fuel switches moved from RUN to CUTOFF, one second apart.

At 08:08:52 and 08:08:56, the switches were flipped back to RUN, triggering an attempted relight.

Engine 1 began recovery; Engine 2 could not sustain core speed despite multiple fuel reintroductions.

The flight data and cockpit recordings stopped at 08:09:11-seconds before the aircraft crashed, just 0.9 nautical miles from the runway.

As the investigation continues, the aviation community remains divided-but united in grief. Whether the crash was caused by human error, a deliberate act, or a hidden system failure, one truth remains: two small switches triggered a massive tragedy. And now, the world waits for answers.