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ATR wing damage in flight

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ATR wing damage in flight

Old 28th Mar 2018, 16:44
  #21 (permalink)  
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According a local newspaper from Aurillac the BEA confirmed it was the left main gear door that caused the damage :https://www.lamontagne.fr/aurillac/t..._12789810.html

There is also in another article some photos ( unfortunately of the wrong side !) here :https://www.lamontagne.fr/aurillac/f..._12789523.html
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Old 28th Mar 2018, 17:10
  #22 (permalink)  
 
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Was wondering the same thing. Here is a theory: if the link between the main gear and the door fails, the door will hinge full up. Then at failure point it may have gained enough momentum to pretty much go up vertically.

BEA has three photos and one shows scrape marks on the fuselage seemingly originating from the landing gear door location:

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Old 28th Mar 2018, 20:01
  #23 (permalink)  
 
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So what is the condition of the tyres? They certainly have enough energy and conditional trajectory to launch the gear door upwards against windage from aircraft speed.
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Old 28th Mar 2018, 21:05
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Originally Posted by TURIN

Can a MLG door get up there and cause that sort of damage ?
Stuff does not always separate in the expected way...

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Old 28th Mar 2018, 21:05
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According to the newspaper linked above, the tyres appear undamaged. Passengers reported the event as taking place as the gear was lowered.

I have done some CFD/6DOF trajectory analysis of gear doors parting ways with the airframe. These trajectories can be really surprising due to the amount of lift available relative to their weight, and the way and order the hinges fail.
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Old 29th Mar 2018, 03:17
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I have done some CFD/6DOF trajectory analysis of gear doors parting ways with the airframe. These trajectories can be really surprising due to the amount of lift available relative to their weight, and the way and order the hinges fail.
OK, now what kind of relative velocities exist in a windstream in the time it takes to travel-2-3 ft in such a case?
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Old 29th Mar 2018, 10:35
  #27 (permalink)  

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Did anyone confirm it was LG panel/door from the same aircraft?
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Old 30th Mar 2018, 09:41
  #28 (permalink)  
 
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So, the BEA investigating an incident with an Air France ATR. That will be pilot error then. Most likely an American pilot in another aircraft!
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Old 30th Mar 2018, 13:26
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So, the BEA investigating an incident with an Air France ATR. That will be pilot error then. Most likely an American pilot in another aircraft!
That's too general. More specifically it will be from a plane operated by today's UAL
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Old 31st Mar 2018, 19:56
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Originally Posted by DaveReidUK
The 340 kts is groundspeed, not IAS.
Nor, TAS!

OAP
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Old 31st Mar 2018, 23:06
  #31 (permalink)  
 
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Originally Posted by Onceapilot
Nor, TAS!
Well only in still air.

But I think we all knew that.
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