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| CurlyB
June 12, 2025, 10:28:00 GMT permalink Post: 11899033 |
Talking head on BBC speculating that it may be a case of retracted flaps instead of landing gear. Seems plausible
Subjects (links are to this post in the relevant subject page so that this post can be seen in context): BBC |
| CurlyB
June 12, 2025, 13:29:00 GMT permalink Post: 11899217 |
How plausible is dogey FMS settings such as excessive flex TO or incorrect M&B?
Hard to tell but it doesn't sound like take off power is applied. Subjects: None |
| CurlyB
June 12, 2025, 15:20:00 GMT permalink Post: 11899328 |
https://www.flightglobal.com/probe-d...121461.article
No idea what happens to a Dreamliner, but the A320 series can handle flaps instead of gear retraction Subjects: None |
| CurlyB
June 12, 2025, 21:01:00 GMT permalink Post: 11899731 |
You are ignorant, and you are rude. There are people in the world who have a different, less limited lived experience from you.
As noted in my profile, I live in the Apple Maggot Quarantine area. Specifically, I live in Lynnwood, Washington directly under the approach path for Paine Field's runway 34 Left, and I've been there since 2007. I lived in Mukilteo from 2000-2007, which is more next to the runway than under it. I also own and operate a small aircraft based at Paine Field and am outside on the ramp at least every other day. Boeing manufactures the 777 and 787 at Paine field. Two thousand, nine hundred and fourty-six of them have been made since 2000, when I moved here. The RAT is deployed and tested during EVERY SINGLE first flight of every aircraft Boeing produces that has a RAT installed. And sometimes it requires a re-test on subsequent flights. So yeah, I have heard a deployed RAT, from the ground, HUNDREDS of times. I've heard it while preflighting my airplane, I've heard it while mowing my lawn, I've heard while lying in bed. And this is exactly what they always sounds like. Another poster compared it to the sound of a T-6 Texan, which is really quite similar. You can find dozens and dozens of videos on YouTube of aircraft landing at Paine Field with the RAT out. It's not rare, it happens daily. https://www.youtube.com/watch?v=DDZJYpe0uL8 Subjects (links are to this post in the relevant subject page so that this post can be seen in context): RAT (All) RAT (Deployment) |
| CurlyB
June 13, 2025, 10:03:00 GMT permalink Post: 11900276 |
Subjects: None |
| CurlyB
June 13, 2025, 19:07:00 GMT permalink Post: 11900817 |
Is the V2 logic based off of RA or baro on take off? Just want to rule out a theory in my head that an incorrect pressure setting may cause an incorrect VNAV intervention.
Worse case scenario imo is that there's a latent failure mode, like the 737 rudder actuator Subjects (links are to this post in the relevant subject page so that this post can be seen in context): V2 |
| CurlyB
June 14, 2025, 06:31:00 GMT permalink Post: 11901163 |
Ex petroleum lab technician and tank farm sampler here. We would occasionally get fuel samples from crashed aircraft to test for contamination. One test was for water and sediment/microorganism sludge.
In this accident, fuel contamination continues to be dismissed as a cause, because no other aircraft have reported issues. But there has been no discussion regarding the airport's fuel storage, transfer, or filtration systems. Water and sediment naturally settles at the bottom of fuel storage tanks. If this aircraft received fuel drawn from the bottom of a storage tank, in the absence of a proper filtration system, it\x92s possible that it was contaminated. The next aircraft may have received fuel from a different storage tank with good fuel. Also, for them to fail at exactly the same time with near full tanks (as evidenced from the explosion) doesn't give much credence to the contaminated fuel theory in my opinion. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): Fuel (All) |
| CurlyB
June 15, 2025, 10:07:00 GMT permalink Post: 11902314 |
I see Times of India is reporting the last call to ATC was
"Thrust not achieved\x85 falling\x85 Mayday! Mayday! Mayday!"
Ahmedabad Air India crash: Long runway roll hints at thrust failure, black box key to probe; officials reveal final moments in cockpit | Ahmedabad News - Times of India
Given the evidence now in the public domain of RAT auto-deployment and simultaneous roll back, with no bird strikes, the most plausible primary trigger is a simultaneous, fuel-related thrust failure on both GEnx-1B engines. Simultaneous FADEC failure seems less likely, at least without tampering. 2. Without any recordings, TOI is not a reliable source 2a. The long runway roll in the tagline has not been proven, as seen many times in this thread 3. The last words of a panicked captain may not be an accurate description of the situation Your theory may be true, but it is speculation built on assumptions EDIT: You're - your Last edited by CurlyB; 15th June 2025 at 11:09 . Subjects (links are to this post in the relevant subject page so that this post can be seen in context): FADEC MAYDAY RAT (All) RAT (Deployment) |
| CurlyB
June 17, 2025, 07:40:00 GMT permalink Post: 11904034 |
A number of years ago I argued the case for autonomous airplanes on this forum. Airplanes without pilots are somewhere in our future, and every accident
that does not completely absolve flight crew brings us closer to windowless cockpits without seats. This accident, until proven one way or the other, is ammunition for both sides of that argument. Absent human beings, it would have happened anyway. Or not at all. It just means that humans are tasked with the more difficult and non-normal events, i.e. emergencies. The FMS can't even account for non normal configuration fuel burn Subjects: None |
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