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Flight to London Gatwick crashes at Ahmedabad airport

2

Comments

  • Registered Users, Registered Users 2 Posts: 2,071 ✭✭✭Lorddrakul


    The loud noise could easily be compressor stall from one or both of the fairly hefty engines, but that could have been precipitated by many different things.



  • Registered Users, Registered Users 2 Posts: 258 ✭✭sailing


    On my aircraft type that I operate, the clean speed is approx 260kts. No way would it would power out of that at 600ft if the flaps were selected up and the landing gear remained down. Maybe a little biz jet would have the power but not an aircraft of this magnitude and weight at such high temperatures.



  • Registered Users, Registered Users 2 Posts: 72 ✭✭JimBobSnob


    I wont speculate on the flap position, I've seen several videos of a the 787 take off flap position and even in high res they look almost up, probably due to the curvature of the wing. The low res videos we see, extremely difficult to speculate on whether they are fully retracted or not.

    https://x.com/AeroPaleo/status/1933193627775152310?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1933193627775152310%7Ctwgr%5E2d4bf186e563ab266a2bd1543966e7764d2690c9%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fwww.pprune.org%2Faccidents-close-calls%2F666472-plane-crash-near-ahmedabad-20.html



  • Registered Users, Registered Users 2 Posts: 72 ✭✭JimBobSnob




  • Registered Users, Registered Users 2 Posts: 19,260 ✭✭✭✭murphaph


    Thanks for that. Loads of people online saying things like "you shouldn't be able to see the engines if the flaps are properly set". I don't think it was anything external to the aircraft. I think you'd see a bird strike or the resultant compressor stalls at the very least.

    I think fuel contamination would affect one engine first, not at exactly the same moment and you'd see the asymetric thrust and the rudder deflection required to keep the aircraft flying straight. We see none of these things. I think any "normal" engine failure would result in asymetric thrust being really obvious at least for a few seconds while they corrected it with rudder.

    Peronally I suspect there are a lot of squeaky bums inside Boeing right now.



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  • Registered Users, Registered Users 2 Posts: 1,439 ✭✭✭funkey_monkey


    If it was fuel then there would be more flights affected.



  • Registered Users, Registered Users 2 Posts: 11,525 ✭✭✭✭smurfjed


    Yep, but VFS is about 1.23 times VS(0), so thats a lot of knots between 260kts and VS. Also V2(5) should be higher than VFS(0)



  • Moderators, Business & Finance Moderators Posts: 18,197 Mod ✭✭✭✭Henry Ford III


    The survivor was interviewed and said the lights were going on and off just before the crash.

    Could it have been a total electrical failure causing both engines to shut down?



  • Registered Users, Registered Users 2 Posts: 11,525 ✭✭✭✭smurfjed


    Unknown photo source.

    IMG_7489.jpeg

    Appears to show both slats and flaps out of their zero positions.



  • Moderators, Business & Finance Moderators Posts: 18,197 Mod ✭✭✭✭Henry Ford III


    If that's correct it would account for what happened. Not enough lift.

    Wouldn't there be alarms etc. if they tried to take off without flaps?



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  • Moderators, Business & Finance Moderators Posts: 18,197 Mod ✭✭✭✭Henry Ford III


    It's happened before - Spanair 5022.



  • Registered Users, Registered Users 2, Paid Member Posts: 41,282 ✭✭✭✭Hotblack Desiato


    Yeah they do that sort of thing at Farnborough with low fuel, no passengers, and no cargo obviously, to show off - I suspect it's a bit different at close to 40C outside with nearly 300 pax and luggage on board and a fuel load to get to London (do Indian aircraft have to divert around Russian airspace?)

    I'm partial to your abracadabra
    I'm raptured by the joy of it all



  • Registered Users, Registered Users 2 Posts: 15,680 ✭✭✭✭joujoujou
    Unregistered Users


    Avherald claims that pilots reported "mayday, no thrust, no taking lift". However, they don't mention what's the source of that revelation. Additionally, avherald page is now offline.

    ERR_CONNECTION_TIMED_OUT



  • Moderators, Category Moderators, Arts Moderators, Entertainment Moderators, Social & Fun Moderators Posts: 16,685 CMod ✭✭✭✭faceman


    every time there's a major crash the site goes down!



  • Registered Users, Registered Users 2 Posts: 2,071 ✭✭✭Lorddrakul


    Not quite the point.

    My point was that even with a more advantageous angle of attack for viewing, with a higher clarity in the video, it is hard to determine if flaps are set to take off settings.

    The manner of the departure was not the point of comparison.



  • Registered Users, Registered Users 2 Posts: 72 ✭✭JimBobSnob


    Interesting take here on the flaps, starts at 6.20, seems highly unlikely they were not down.

    I read somewhere else there have been a few brainfart incidents, albeit rare, of the flaps up lever being pulled instead of gear up. Which also seems hard to believe considering their relative positions. This guy believes that is what happened.



  • Registered Users, Registered Users 2 Posts: 11,525 ✭✭✭✭smurfjed


    But even if the flaps were selected rather than the gear, there is nothing stopping them putting the lever back down again, considering the “mayday”, this wasn’t the case.



  • Registered Users, Registered Users 2, Paid Member Posts: 9,296 ✭✭✭cml387


    its difficult to believe believe a competent crew could mistake undercarriage retraction with flap retraction. They are after all completely different levers in different places. Since we are in the realms of speculation. I think it is an incorrect TOGA thrust setting. That has definitely also happened before



  • Registered Users, Registered Users 2, Paid Member Posts: 18,195 ✭✭✭✭Goldengirl


    I despair for the investigation into what happened.

    Just seeing on the news a guy strolling off with some sort of recorder from the aircraft in his bare hands !

    Looks like a complete botch job going on . Hope they get some international aviation crash experts in soon .



  • Registered Users, Registered Users 2 Posts: 72 ✭✭JimBobSnob


    Pakistan airlines managed to get a 320 onto the runway with no gear. Incompetence happens.



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  • Registered Users, Registered Users 2, Paid Member Posts: 9,296 ✭✭✭cml387


    Can't disagree. It is a most perplexing accident. When we hear the cause we'll allay ah,really?



  • Moderators, Motoring & Transport Moderators Posts: 10,306 Mod ✭✭✭✭Tenger


    The fact that the flight crew made a Mayday call and didn't mention this might discount that theory.



  • Moderators, Motoring & Transport Moderators Posts: 10,306 Mod ✭✭✭✭Tenger


    NTSB are involved.

    What's wrong with holding a recorder in your hands? The skin isnt going to contaminate the data. Better to get it out quickly of the wreckage is still smoldering. Was it actually a recorder?



  • Moderators, Business & Finance Moderators Posts: 18,197 Mod ✭✭✭✭Henry Ford III




  • Registered Users, Registered Users 2 Posts: 72 ✭✭JimBobSnob


    The survivor also said after the lights flickering he "could feel the engines increasing thrust to go up" This isn't consistent with the phone video. Maybe he heard the RAM? Or is still in complete shock and his memory is understandably hazy



  • Moderators, Category Moderators, Arts Moderators, Entertainment Moderators, Social & Fun Moderators Posts: 16,685 CMod ✭✭✭✭faceman


    Latest videos show that the RAT was likely deployed. Presuming that means electrics or hydraulics had failed?



  • Registered Users, Registered Users 2 Posts: 1,044 ✭✭✭RickBlaine


    The top rated comment on that video is this, "Hi I’m an ex 787 captain, in this phase of flight due to the flight envelope protection and auto gap protection, the system doesn’t allow you to retract flaps even accidentally ." That would seem to discount that theory assuming that commenter is actually a 787 pilot.



  • Registered Users, Registered Users 2 Posts: 19,260 ✭✭✭✭murphaph


    Captain Steve has since changed his mind. He rushed to judgement of the crew. The RAT clearly deployed.



  • Registered Users, Registered Users 2 Posts: 19,193 ✭✭✭✭banie01


    The RAT being deployed, the flaps being set (as indicated in wreckage photos), the undercarriage still being down, are all IMO pointing towards something that should be nigh impossible on a modern jetliner, a total loss of power via double engine failure. (I could be wrong, this is my read of what's known now)

    Also interesting to note that Boeing have cancelled their press event at Paris Airshow by way of respect for the families of the Ahmenabad crash.

    Michael O'Leary is being vocal again re: Boeing quality control issues.

    “We had planes being delivered and when we get them back to Dublin we find spanners and tools under the floorboards,” O’Leary told The Times in his boardroom. “What the factory in Seattle needs is someone overseeing the production line. At the moment it’s just salesmen.”

    To combat the issue, the airline now employs 30 engineers in Seattle and Wichita for inspections. Once a new aircraft arrives in Dublin, local engineers conduct a 48-hour inspection. “Only once we are completely happy does it go into operation,” O’Leary said in February last year.

    The fact that Ryanair have embedded 30 QA engineers within Boeing and still finding it necessary to undertake a full invasive QA check upon delivery is a damning indictment of the state of play in Ryanair's confidence in Boeing's product.



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  • Registered Users, Registered Users 2 Posts: 11,016 ✭✭✭✭volchitsa


    I'd say any airline that is as tightly fixed in to Boeling as Ryanair is must be terrified of being associated with their current reputation. I'm not surprised he's eager to tell the public just how much effort Ryanair makes to ensure safety. It would honestly be a small but nevertheless real factor in my decisions as to who to fly with.

    However I'm very aware that all onboard staff including pilots are likely to be even keener on such safety measures for their own reasons, so that's why I say it's only a minor consideration for me. I wonder whether it's at risk of becoming a factor in recruitment?



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