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DaveReidUK
June 12, 2025, 15:11:00 GMT permalink Post: 11899318 |
Still, it's a useful indication as to who does or doesn't bother to read previous posts before posting ... Subjects (links are to this post in the relevant subject page so that this post can be seen in context): ADSB |
DaveReidUK
June 12, 2025, 15:24:00 GMT permalink Post: 11899334 |
You can triangulate the camera location using the aircraft holding short for takeoff and the road sign. Then draw a line from there just to the right of the instrumentation building and you'll find the aircraft rotated with about 4000 feet of runway remaining (11000+ runway length).
The single (so far) airborne ADS-B plot, with that widely-quoted pressure altitude of 625', is at a point more or less overhead the piano keys at the 05 end. Adjusting for a QNH of 1001 hPa gives approx 285' AMSL or 95' AAL. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): ADSB |
DaveReidUK
June 12, 2025, 17:34:00 GMT permalink Post: 11899523 |
Subjects (links are to this post in the relevant subject page so that this post can be seen in context): RAT (All) RAT (Deployment) |
DaveReidUK
June 12, 2025, 21:11:00 GMT permalink Post: 11899737 |
It's the conclusions that people have jumped to while ignoring the fact that there's a 4\xbd minute gap in the data that have turned out to be incorrect. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): ADSB FlightRadar24 |
DaveReidUK
June 12, 2025, 21:57:00 GMT permalink Post: 11899774 |
Apropos pundits and charlatans, there has just been an interview on BBC2's Newsnight with Cranfield's Guy Gratton, who was at pains to distinguish between what was known and what wasn't known, and who resisted all invitations to speculate.
Well done that man. Subjects: None |
DaveReidUK
June 13, 2025, 08:13:00 GMT permalink Post: 11900146 |
Subjects: None |
DaveReidUK
June 13, 2025, 09:30:00 GMT permalink Post: 11900244 |
Graphic produced from GE and later FR24 data showing the 8 airborne plot points between rotation and the transponder dropping out:
![]() Elapsed time between first and last points was 4.32 s, giving an average groundspeed of 179 kts. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): FlightRadar24 |
DaveReidUK
June 13, 2025, 09:49:00 GMT permalink Post: 11900263 |
Subjects (links are to this post in the relevant subject page so that this post can be seen in context): RAT (All) RAT (Deployment) |
DaveReidUK
June 13, 2025, 11:17:00 GMT permalink Post: 11900370 |
AFAIK , both the NTSB and UK AAIB are by now onsite to assist the investigation at the request of the Indian AIB. The suggestion that they wouldn't notice, or would be party to, funny business with the flight recorders is ridiculous. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): AAIB (All) AAIB (UK) DFDR NTSB |
DaveReidUK
June 13, 2025, 14:18:00 GMT permalink Post: 11900556 |
"The flaps of the plane appear not to have been extended when they should have been" - Nick Marsh, BBC Transport Correspondent on BBC News at One.
No mention of any source for that assertion. BBC News at One Subjects (links are to this post in the relevant subject page so that this post can be seen in context): BBC |
DaveReidUK
June 13, 2025, 14:25:00 GMT permalink Post: 11900567 |
Subjects (links are to this post in the relevant subject page so that this post can be seen in context): Air Worthiness Directives |
DaveReidUK
June 13, 2025, 17:04:00 GMT permalink Post: 11900696 |
Apologies if already discussed but I'd be interested to know
how common/unusual it is for a commercial aircraft to be "Stored for parts to be used on other 787's in the fleet" and then "Returned to Service"? These happened on 2019-01-23 and 2019-05-24 respectively according to this page.
It is of course quite common for an aircraft in the hangar for a spell to donate parts to keep other aircraft flying while it's grounded - they are normally referred to as "Christmas trees", for obvious reasons. Subjects: None |
DaveReidUK
June 13, 2025, 22:07:00 GMT permalink Post: 11900960 |
Subjects (links are to this post in the relevant subject page so that this post can be seen in context): FDR |
DaveReidUK
June 14, 2025, 08:16:00 GMT permalink Post: 11901240 |
Actually, nobody should "read post #867".
The mods are doing a sterling job removing hundreds of irrelevant posts. I'm not suggesting for a moment that the one you're referring to falls into that category, but it's highly likely that the mods continuing valiant efforts have resulted in the post in question now having a different sequence number. Much better to use the "permalink" facility - that's why it's there. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): Thread Moderation |
DaveReidUK
June 14, 2025, 09:10:00 GMT permalink Post: 11901288 |
But "erroneous" ? In what respect ? Subjects (links are to this post in the relevant subject page so that this post can be seen in context): ADSB |
DaveReidUK
June 14, 2025, 13:53:00 GMT permalink Post: 11901507 |
But I would fully expect some findings from the FDR and CVR analyses within the next few days, given the high profile of the accident and the fact that operators of 1000-odd 787s are waiting anxiously in case there turns out to be some previously undiscovered failure mode that could affect their fleets (though that's highly unlikely IMHO); Subjects (links are to this post in the relevant subject page so that this post can be seen in context): CVR FDR Preliminary Report |
DaveReidUK
June 14, 2025, 15:11:00 GMT permalink Post: 11901560 |
Subjects: None |
DaveReidUK
June 14, 2025, 15:14:00 GMT permalink Post: 11901563 |
Yes, the media (not only in the quoted article) are still having trouble with the concept that the 787 doesn't have a separate CVR and FDR.
Subjects (links are to this post in the relevant subject page so that this post can be seen in context): CVR FDR |
DaveReidUK
June 14, 2025, 16:07:00 GMT permalink Post: 11901611 |
I did read and search this thread, but I found nothing about ADS-B loss just before the end of the runway and at 71 ft high, according to FR24. ADS-B coverage is poor on the ground on the north-east part of the airfield (hence the fake news about taking off from the intersection) but I don't think it would be lost once airborne, except if it has been shut off... electrical failure ?
But certainly loss of engines or electrics that caused deployment of the RAT (if that was the case) would be accompanied by a bunch of load-shedding, which would in all likelihood include the transponder. Edit: Your own reply beat me to it ... Subjects (links are to this post in the relevant subject page so that this post can be seen in context): ADSB Electrical Failure FlightRadar24 RAT (All) RAT (Deployment) |
DaveReidUK
June 14, 2025, 17:07:00 GMT permalink Post: 11901665 |
So get the arguments in quick as we'll probably know definitively within a couple of days. Subjects (links are to this post in the relevant subject page so that this post can be seen in context): FDR RAT (All) |