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Sheremetyevo Superjet 100 in flames

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Sheremetyevo Superjet 100 in flames

Old 5th May 2019, 19:29
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Originally Posted by San Diego kid View Post
Wow, that was painfull to watch how long firefighters needed to arrive.
Yep.
They had already declared emergency.....
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Old 5th May 2019, 19:49
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RT now reporting 13 fatalities confirmed. The wording implies that the toll could rise.
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Old 5th May 2019, 19:53
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Originally Posted by andrasz View Post
IF rumors correct, there was NO in-flight fire, only electric failure and loss of comms due to a lightning strike. MLG collapsed on third touchdown after two bounces, fire broke out afterwards. Available video only shows the aircraft already on fire, sliding to a halt.
I second this. Read similar rumors. Besides, Aeroflot stated that the fire started after touchdown.
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Old 5th May 2019, 20:00
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Reports also suggest it did not succeed in its first emergency landing attempt.
https://www.bbc.co.uk/news/world-europe-48171392




from https://ria.ru/20190505/1553277937.html
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Old 5th May 2019, 20:01
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Rumors they had “direct law”, so switched on 7700. Then the question to crash teams
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Old 5th May 2019, 20:02
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Originally Posted by jantar99 View Post
I second this. Read similar rumors. Besides, Aeroflot stated that the fire started after touchdown.
Fair enough, you would have thought the fire crews would have been chasing it down the tarmac though? I've had that before now, for far less important events, including an icident at Coventry that is probably best forgotten ...
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Old 5th May 2019, 20:04
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Reports also suggest it did not succeed in its first emergency landing attempt.
Originally Posted by NutLoose View Post

I would ignore that, that will be some half-assed journalist studying the FR24 track and mistaking the hold for a missed approach (that BBC article mentions FR24, so thye probably looked) .. they are not very bright.
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Old 5th May 2019, 20:05
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Did that Yakutia gear collapse produce a fuel leak? I see moisture and possible foam on the tarmac.
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Old 5th May 2019, 20:08
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Originally Posted by pattern_is_full View Post
Did that Yakutia gear collapse produce a fuel leak? I see moisture and possible foam on the tarmac.
It did!

"The aircraft failed to stop on the remaining runway and overran onto the area that was under reconstruction, stopping after 250 meters. This caused damage to the forward fuselage, separation of both main landing gear bogies and a fuel tank leak."

https://aviation-safety.net/database...?id=20181010-0
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Old 5th May 2019, 20:11
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Originally Posted by paperHanger View Post
...you would have thought the fire crews would have been chasing it down the tarmac though?
Absolutely. There is zero justification for their 90+ second absence.

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Old 5th May 2019, 20:16
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Originally Posted by paperHanger View Post
Odd that they flew a hold ...
I have watched the FR data again and it looks to me they were too high/fast for the first approach.
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Old 5th May 2019, 20:41
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Re the 7700 squawk; the replay I just watched showed they were actually squawking 7600.
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Old 5th May 2019, 20:46
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Faraday cage

I am not an aviation professional so grateful if someone could explain things to me:
If the theory of lightning strike are true, how does it lead to electrical failure ? I thought that an aircraft aluminium or metal mesh composite effectively created an Faraday cage ?
If there were local electrical transients, would this only trip circuit breakers. which presumably could be reset quickly ?
Thank you.
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Old 5th May 2019, 20:46
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An airport official said that ‘many passengers delayed emergency evacuation - because against all instructions - they were picking up hand luggage from overhead compartments.’
When is someone going to be prosecuted for this?
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Old 5th May 2019, 20:51
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Originally Posted by freshgasflow View Post
I am not an aviation professional so grateful if someone could explain things to me:
If the theory of lightning strike are true, how does it lead to electrical failure ? I thought that an aircraft aluminium or metal mesh composite effectively created an Faraday cage ?
If there were local electrical transients, would this only trip circuit breakers. which presumably could be reset quickly ?
Thank you.
Not circuit breakers, but FMC failures, generator failures,spurious warnings etc. etc.

But 99% are resettable. Okay 98%
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Old 5th May 2019, 20:57
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Hard landing video, finally
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Old 5th May 2019, 21:01
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Video from onbaord during the landing.

twitter/Ozkok/status/1125122006674964480
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Old 5th May 2019, 21:09
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Originally Posted by freshgasflow View Post
I am not an aviation professional so grateful if someone could explain things to me:
If the theory of lightning strike are true, how does it lead to electrical failure ? I thought that an aircraft aluminium or metal mesh composite effectively created an Faraday cage ?
If there were local electrical transients, would this only trip circuit breakers. which presumably could be reset quickly ?
Thank you.
Well, it's not that simple. Lightning generates very large currents. I don't know anything about the specific's of the Sukhoi electrical system, but many aircraft electrical systems are single wire, chassis ground systems like an automobile. In those, lightning generating a large current in the airframe, is the same as the lightning generating a large current within the electrical system ... with the resulting possibility of overcurrent damage to critical components. Even in electrical systems whcih do not use the airframe as a conductor, the fact that you have large current transients in the airframe, adjacent the wiring, can lead to burned insulation, induced voltage spikes within the conductors, and other effects that may result in damage to critical components. As far as breakers are concerned, they are designed to protect from excessive current flowing through the normal path of the electrical circuit. A lightning strike may not trip them, it may be causing damage on components in a way that there is no excessive current flowing through the wiring at the breaker panel.
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Old 5th May 2019, 21:11
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Originally Posted by Airclues View Post
When is someone going to be prosecuted for this?
When it's made a criminal offence.

Then try and prosecute someone for it and see how it goes going after people who behave irrationally in an emergency.

We all know what we'd do when watching it on YouTube. Whole different ball game in the middle of it.

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Old 5th May 2019, 21:37
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Given that there was a "bounce" that was apparently hard enough to start a substantial fuel leak, I wonder if overhead bins opened and spilled luggage? If bags fell and were blocking the aisle, I think there would be a strong temptation to grab and pitch out the open doorway simply to get them out of the way. (Although that doesn't explain the people calmly rolling their bags away...)
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