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T28B
2025-06-12T16:01:00 permalink Post: 11899405 |
One of the best things that our Professional and Knowledgeable members can to is point out errors (or nonsense) as it is encountered, or report posts that are well beyond the pale. The Mod/Admin team has already engaged in substantial clean up. General point: It is not uncommon that on social media, and in the press, we see sciolists pop up when a plane crash occurs. What is a sciolist?
A person who pretends to be knowledgeable and well informed.
Please, for all of our readers, keep that in mind as you try to separate the wheat from the chaff during this discussion. Subjects: None |
T28B
2025-06-12T20:44:00 permalink Post: 11899716 |
Current a/c Type A319/A320
A link to the report Zoot0 referred to: https://ad.easa.europa.eu/blob/AIR-2..._AIR-22-09R1_1 Excerpt in the spoiler
Spoiler
{there is more, this is just a taste, see the whole report for details}. Would any of our 787 qualified pilots care to comment on this as it relates, or doesn't relate, to the aircraft's brief flight shown on the CCTV video? Subjects: CCTV Dual Engine Failure Engine Failure (All) TOGA 2 users liked this post. |
T28B
2025-06-12T22:17:00 permalink Post: 11899784 |
![]() Thanks to @tdracer for the informed speculation. Uninformed, speculation - such as 'the cloud of dust shows that it went off the runway' - we can do without. Subjects: None 8 users liked this post. |
T28B
2025-06-12T23:28:00 permalink Post: 11899831 |
That said, what I did was for the past 7 days of this flight - i.e. 787s travelling to Gatwick I downloaded the raw .CSV data for each flight. From that I took the first sample with an altitude of >0 i.e. the first point that the flight looked to be airborne. On my picture (which I've tried to show in 3D as far as possible), these are labelled as 1-1, 2-1, 3-1 etc and orange. As I don't have enough posts to include the visualisation, here it is:
postimg.cc/gLW8zXDg The flight from today is in red with a larger marker. As you can see, it appears to be in the same position in space as every other flight this week at the same point in time (with all the caveats above). It did, however, have a ground speed approx. 10knts less than any other flight this week. Is that significant? I don't know. It certainly isn't airspeed anyway, so may not mean much. ![]() (Interesting picture that you painted, in comparing to similar events using a similar data baseline). Subjects: None 3 users liked this post. |
T28B
2025-06-12T23:54:00 permalink Post: 11899847 |
Ok why was the gear still down. Under all circumstances that comes up with positive rate. Can’t see the flaps but sure looks like they were retracted instead of gear coming up.
engine failure. Sure that would suck lift out but all parameters take thay into effect with the proper flap setting. And you can’t take off without the right flap setting per the performance data unless you ignore it. Loss of lift. VNAV engages at 400 ft and targets airspeed in MCP. Subjects: Engine Failure (All) Flap Setting Flaps (All) Gear Retraction Parameters VNAV |
T28B
2025-06-13T00:50:00 permalink Post: 11899878 |
I empathize with your frustration, and you have no idea how much has already been scrubbed. There are some wise engineers, ATC pros, and GE/RR experts who are not pilots but who do post here, and whom we'll not bar from discussion. Do you understand why? (Yes, we also have examples of Sturgeon's Law in action as well). Subjects: None 6 users liked this post. |
T28B
2025-06-13T00:56:00 permalink Post: 11899884 |
Gents and ladies, this thread shall not become an A versus B event.
Stay on topic, stay focused, or maybe post elsewhere. Thank you all in advance. Subjects: None 13 users liked this post. |
T28B
2025-06-13T02:15:00 permalink Post: 11899928 |
As fdr said just a few posts ago, this accident and investigation has "international importance" and the 787 is a "globally important aircraft type."
Big aviation accidents do indeed capture the public's imagination, because they provoke [insert title of risque novel by Erica Jong, circa 1974], because they negatively affect a cross-section of people in the places connected by the flight in question, and because governments generally take them quite seriously. The junk-posters would be wise (though when hell freezes over) to recall that the people who care the most about getting the right answers through the investigation are the . . . . professional pilots. The PPs prefer radio comms that are more signal than noise, so of course objections will be raised when the noise level increases. Subjects: None 1 user liked this post. |
T28B
2025-06-13T18:13:00 permalink Post: 11900771 |
Subjects: None 3 users liked this post. |
T28B
2025-06-15T17:03:00 permalink Post: 11902637 |
Inference is not evidence.
Originally Posted by
inference
The act or process of inferring by deduction or induction.
I have discussed this with some of the mod and admin team. For the time being such speculation isn't just premature, it is potentially slanderous to our colleagues who died in this crash. I understand why some wish to air that inference. Please show our deceased colleagues your ability to exercise patience. If evidence of such comes to light then obviously the state of play changes. If you compare this crash to the one recently in China (that a few of you have referred to), in that case there was a flight path trajectory that really stood out. In this case, there is no such flight path trajectory that leaps out at you as being wildly out of the norm. The apparent loss of power in this case, that has been discussed at great length, has been shown to have a variety of possible initiating causes or event chains. In time other information may come to light that reveals an as- yet-unguessed anomaly that none of the brain trust of PPRuNe has come up with. Again , inference is not evidence. Then there's the other advice I am often given: It is usually best not to attribute to malice that which can be attributed to simple error. Thank you all in advance. Let's keep it professional. Subjects: None 59 users liked this post. |
T28B
2025-06-15T17:45:00 permalink Post: 11902665 |
Which aircraft are you referring to where this has happened in the past?
Is there an incident (or your experience in a sim session?) that you can refer to?
777/787 driver here.
Reading a few posts about an APU-to-pack takeoff, or a packs off takeoff on a 787, because of the hot weather, makes me shake my head. There is no bleed air on the 787. A packs off takeoff, or an apu to pack takeoff, is never done. There isn’t a procedure in the fcom to describe it. It is also pointless. The packs are electrical. Subjects: None 2 users liked this post. |
T28B
2025-06-15T21:50:00 permalink Post: 11902877 |
Posters are reminded to review this guidance.
Plane crash near Ahmedabad.. Also, if your post gets deleted, don't just post the same thing again. Thank you all in advance. Subjects: None 4 users liked this post. |
T28B
2025-06-15T23:14:00 permalink Post: 11902946 |
I do not intend to single you out, but I want to illustrate something with this response. A lot of discussion on this thread has pointed toward two engines failing - or losing power - for a variety of reasons. PPRuNe members are analysing and discussing this tragedy. When a credible report comes out that says
"Based on FDR data, the two donks quit at {such and such a time} and {x event} associated with this indicates that they {failed or shut down} by time {XX:XX:XX}"
you, or we, can say that engines were shut down or failed.
Using unconfirmed news reports, social media, or PPruNe analysis as a basis of "fact" is hazardous. A number of posters succumbed to this: see the obsession over white and green lights at the exit door (near seat 11A) as but one example. As an aside: your EFATO story might be of interest on the Mil Av forum. ![]() 5 users liked this post. |
T28B
2025-06-15T23:30:00 permalink Post: 11902961 |
The upgrade to 777 between then and now is within reason. Beyond that. ![]() With that lighthearted diversion completed, back to the bickering. Subjects: None 11 users liked this post. |
T28B
2025-06-16T01:36:00 permalink Post: 11903035 |
(I raise this point based on what's in the profile). Would that change your desire to engage in a bit of eye gouging of over that particuar detail? Full disclosure: most of the posts you have offered in this long and painful thread have hit the "makes sense" threshold with me. But you and I have not read the same thread. I have had to read all of it. You've only been exposed to some of it. I am about out of patience with the mutual eye gouging bit (most of which has been scrubbed) but at the moment thread closure isn't in the offing. SP closed it when it had run amok. If it does so again, it will be doubtless be closed for a breather. That's for the Mod/Admin team to assess. Subjects: MLG Tilt 9 users liked this post. |
T28B
2025-06-16T22:22:00 permalink Post: 11903837 |
![]() Two things that it is hard to get information about, but that aviation industry professionals all have concerns about as expressed in the previous thread: 1. Unscheduled Maintenance 2. Scheduled Maintenance (1) Based on a passenger's comments on line, a variety of things - passenger side - weren't working as expected. How many other things that "needed attention" could be worked on in the interval between arrival from the previous flight and the takeoff that ended up in the tragic crash? (2) Based on some discussions by our posters of some known issues with software that have a time tag on them, interest has been displayed in whether or not those ADs and "known issues" had been taken care of by Air India. Good questions, for the investigators, but hard to answer on PPRuNe at this point since there has probably been a hard lock down by Air India on their maintenance records. They have an investigation ongoing. The kind of information that people were/are asking about may or may not be leaked. In some previous accidents there have been some cases of that info coming to light outside of official protocols. But expecting that may be a step too far. I am sure that the investigators will ask those kinds of questions, and if we are patient those kinds of questions will eventually be answered. Thank you all for your continued interest. Let's keep it Professional. ![]() Subjects: None 5 users liked this post. |
T28B
2025-06-16T23:42:00 permalink Post: 11903874 |
Mod Guidance:
Any further splitting of hairs as regards the words of the sole survivor will be viewed with disfavor. That horse is long dead, and is now top quality industrial adhesive. Please refer further queries to the above post. ( And the one further up with a best effort translation by appruser ). Thank you, @appruser, for your efforts in both threads to provide clarity. Subjects: None 3 users liked this post. |
T28B
2025-06-17T16:00:00 permalink Post: 11904425 |
There are several videos of the survivor being interviewed in India, all of them as one might expect, in the language of the country, with English subtitles. As Mr Ramesh is a British national, many years in the UK, I did wonder if there have been any interviews in English, in which I expect he is fluent. That might/should eliminate errors in translation and make his testimony more clear. I can't find any on the net.
As to the recent mutual eye gouging, which I have removed: please, let's keep the tone professional and not engage in mutual eye gouging. Thank you all in advance. for @brokenenglish EDIT: I see you cleaned that up, cheers. Subjects: None 5 users liked this post. |
T28B
2025-06-17T16:26:00 permalink Post: 11904446 |
![]() How many of us, over the years, have seen a case of 'fast hands', and had to catch it, or correct it before things went pear shaped?
In jet aircraft how many systems related dual engine flameouts have occurred at low altitude ? Excluding FOD — birds and ice (which presumably aren’t a factor here) how many systems caused dual engine flameouts have occurred ?
As opposed to how many engine failures, thrust losses, or shutdowns have been caused by crew members grabbing at improper levers under stress or setting wrong data (I’ll include Air Florida in that). Not meant to be self - indicting by any means but if one is looking at probabilities and far-fetched scenarios you can’t exclude crew actions as a part of that . I felt that the (valid) objection was to the problem of stating as a fact that which is an estimate or a guess. Subjects: None 5 users liked this post. |
T28B
2025-06-17T18:43:00 permalink Post: 11904553 |
1. We can't afford him, even if we could do that.
![]() 2. Attempting to enforce a writing style isn't going to work. I was offered a link to an official report (allegedly by the AAIB in India) this morning from a retired pilot friend: he said it was dated 15 June 2025. I checked the official site and found nothing. I went to his link and got a 404 result. Even professionals (he's only been retired a couple of years) can be taken in by the avalanche of "information" running around. Subjects: AAIB (All) AAIB (IDGA) 6 users liked this post. |