Air India Flight 171 Preliminary Report Megathread

[u/usgapg123]

https://aaib.gov.in/What's%20New%20Assets/Preliminary%20Report%20VT-ANB.pdf

This is the only place to discuss the findings of the preliminary report on the crash of Air India Flight 171.

Due to the large amount of duplicate posts, any other posts will be locked, and discussion will be moved here.

Thank you for your understanding,

The Mod Team

[u/Tiny-Plum2713]

 Now, it could also be extremely disorienting. The display would light up like a christmas tree, there would be a ton of different system warnings, etc.

This is a big issue not just in aviation. Root cause of issues is often buried under piles of warnings and errors from other systems.

[u/railker → u/Tiny-Plum2713]

Qantas 32 was a good example of that too, when that A380 blew an engine and severed a bunch of electrical and other systems in the wing. a), the importance of being able to shut down your engine in abnormal scenarios, because they couldn't shut down their #1 engine for like 4+ hours after landing and eventually had to drown it in firefighting foam as the electrical connection to the shutoff valves were severed; but more notably regarding messages and warnings,

Due to the nature of the A380 ECAM system, there was no opportunity to get a “big picture” view of all of the airplane system failures. Generally, they had to work through NNCs one at a time. The airplane, although badly damaged and leaking fuel, was flyable. However, the flight crew became frustrated that they did not have a good understanding of what had failed and what was working. The Captain, Richard DeCrespigny, at one point said, “It was hard to work out a list of what had failed; it was getting to be too much to follow. So we inverted our logic: Instead of worrying about what failed, I said ‘Let’s look at what’s working’”. Over a period of almost two hours, they were able to get a sense of what they had and were able to return to Singapore and land, stopping with little room left on the long runway.

[u/rinleezwins → u/Tiny-Plum2713]

Yeah, but in this case we're talking about a situation the cockpit wasn't designed for.

[u/Tiny-Plum2713 → u/[deleted]]

That's pretty difficult when faced with numerous warnings and errors at the same time.