Air India 787 crashes on take off 3

[LittleInch]

A full 787-8 has crashed shortly after take off in ahmedabad.

Basically barely got off the ground then look like its trying to land in this video.

Air India flight to London Gatwick crashes in Ahmedabad with more than 240 people onboard – latest updates

Plane for flight AI171 was carrying 242 people including 169 Indians and 53 Britons, says Air India

www.theguardian.com

Specualtion that they pulled flaps up instead of gear up and basically didn't have enough lift so it looks like a gentle stall right into a built up area.

Looks to be flaps up, slats/ nose flaps down and gear down which is very odd.

 

[Debirlfan]

Well your water leaks comment is timely, as FAA has issue an AD dated 16 June 25, with water leak AD's and inspections going back approximately 4 years.

I think that's the video I saw.

 

[LittleInch]

"and we now know a 787 engine will not keep running with loss of electrical power, as pre-FADEC engines were capable of doing"

Where did this get stated or confirmed?

I'm not saying you're wrong, just I haven't seen anything that states this with any certainty.

 

[Alistair_Heaton]

I don't think it does die. But it just stays as it is with fuel flow.

You need to use the fuel valve to stop it running or flood it with water

 

[Garbage1]

My memory is the information was contained in the B787 ME&AV Type 1 Training Manual. Link is posted again below, but document has been removed.

EEU controls fuel valve in 787, and FMU controls fuel metering. How are those functions performed with total loss of electricity or control communications? Falisafe mode appeared to be spring loaded fuel shutoff valve, open when energized. Previously it is documented in 2015 that messages caused rollback of dual engines after 248 days of not powering down.

Interesting side note is the removed training manual was from a Chinese training site.

https://archive.org/details/b787-meav-type-1-training-manual

 

[TugboatEng]

If a control system is using PWM to manage fuel flow it's not going to flow any fuel if power is lost.