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ATR wing damage in flight

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ATR wing damage in flight

Old 27th Mar 2018, 06:14
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ATR wing damage in flight

Not sure what happened here as the description isn’t very helpful.

Either way, it doesn’t look good.



Center WingBox of Hop! Air France ATR-42, damaged in mid-air. ? News In Flight
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Old 27th Mar 2018, 06:31
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Originally Posted by reverserunlocked View Post
Not sure what happened here as the description isn’t very helpful.
Indeed it isn't. It's clearly not what most people would understand by a "centre wing box".

I'd be interested to see a photo showing the left MLG. The BEA are investiigating the incident.
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Old 27th Mar 2018, 06:42
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Folks,
Seems that ATSs are a bit fragile, some will remember the structural failure at the top of the fin in a Virgin Australia aircraft.
As it apparently did not happen on landing, ????, doesn't seem likely it was a bird strike. Is it just my eyes, or does it look like part of that fairing failed in tension.
Tootle pip!!
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Old 27th Mar 2018, 08:05
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Other reports say MLG door separated and hit the composite fairing. Looks dramatic but no structural damage from what I can see. Must have caused quite some noise in the cabin though...


Seems that ATSs are a bit fragile...

Many moons ago I did an evaluation of various makes/models and I was surprised to learn in the process that the ATR72 has the lowest structural weight per seat of ANY post-war airliner, which is a key selling point in high airport/ATC fee regions (which are MTOW driven).
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Old 27th Mar 2018, 11:25
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Why the panic?

That's neither wing, fuselage nor structural damage, but surely a non-structural fairing which - unusually - has been impacted by something.

Hardly cause for alarm for the aircraft type as such.
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Old 27th Mar 2018, 11:47
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["http://https://aviation-safety.net/wikibase/wiki.php?id=208217"]

The Flight Radar trace seems to show a sudden speed excursion to 340 Knots, coincident with a sudden altitude loss from 10K' to 7.5K'.

Last edited by twochai; 27th Mar 2018 at 11:57. Reason: Correction of URL
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Old 27th Mar 2018, 12:28
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Originally Posted by EDMJ View Post
Why the panic?

That's neither wing, fuselage nor structural damage, but surely a non-structural fairing which - unusually - has been impacted by something.

Hardly cause for alarm for the aircraft type as such.
If it turns out to have been a departing MLG door that did the impacting, then a cause for alarm is exactly what it is, and it's fortunate that it was only secondary structure that was damaged.

Aircraft have been lost under similar circumstances: Report on the accident to BAe HS 748, G-ASPL at Nailstone, Leicestershire on 26 June 1981
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Old 27th Mar 2018, 14:33
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https://www.rt.com/news/422453-paris...ight-incident/
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Old 28th Mar 2018, 05:51
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According to that article, the pilot either didn't know or claimed not to know what caused the noise. If a door came loose, shouldn't there have been some sort of indication in the cockpit?
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Old 28th Mar 2018, 07:35
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That indication was or should have been the intercom from the Cabin Crew.


"Did you hear that Captain"


Other than that NO.
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Old 28th Mar 2018, 08:34
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As farvas I remember the main gear Doors a fixed to the landing gear and does not have a separate actuator. It is secured to the airframe with pianohinges. If one piano hinge fails the door is free to fall outward and I’m sure it will be ripped completely of if the happens.
As others have mentioned it damaged some non structural composite panels.
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Old 28th Mar 2018, 09:57
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Originally Posted by twochai View Post
["http://https://aviation-safety.net/wikibase/wiki.php?id=208217"]

The Flight Radar trace seems to show a sudden speed excursion to 340 Knots, coincident with a sudden altitude loss from 10K' to 7.5K'.
Hmm 340 knots. One might put the gear down at such a speed to slow down and then....lose a gear door.

Wonder what the full story is.
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Old 28th Mar 2018, 10:49
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"Air France"...


So what is reflecting the flash?
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Old 28th Mar 2018, 12:20
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Originally Posted by JammedStab View Post
Hmm 340 knots. One might put the gear down at such a speed to slow down and then....lose a gear door.

Wonder what the full story is.
340 knts in an ATR. Right.
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Old 28th Mar 2018, 12:30
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Originally Posted by twochai View Post
["http://https://aviation-safety.net/wikibase/wiki.php?id=208217"]

The Flight Radar trace seems to show a sudden speed excursion to 340 Knots, coincident with a sudden altitude loss from 10K' to 7.5K'.
Originally Posted by JammedStab View Post
Hmm 340 knots. One might put the gear down at such a speed to slow down and then....lose a gear door.

Wonder what the full story is.
Originally Posted by ZFT View Post
340 knts in an ATR. Right.
Is this your best guess at the story? Hmmm, high speed on the radar(could be winds affecting the speed), sudden descent, gear door mysteriously flies off. Something unusual happened.
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Old 28th Mar 2018, 13:07
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Originally Posted by AirUK View Post
VMO in an ATR at 10,000' is 250 KIAS. VLO is 170 KIAS. Either the 340 KIAS is erroneous
The 340 kts is groundspeed, not IAS.
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Old 28th Mar 2018, 13:30
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Originally Posted by DaveReidUK View Post
The 340 kts is groundspeed, not IAS.

I was about to point out the same thing...


It's obviously been clouted by something but despite rumours of an MLG door departing the airframe there's no other pictures/anything more official of any airframe parts missing other than the damage shown above. My first thought was a part of a prop blade had detatched, given the look and position of the damage.
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Old 28th Mar 2018, 13:42
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‘Ding!’ ‘MLG DOOOR FELL OFF’
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Old 28th Mar 2018, 14:00
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I can't imagine a gear door going that far up before it went aft, there's more to the story....
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Old 28th Mar 2018, 16:30
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Can a MLG door get up there and cause that sort of damage ?
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