4th Aug 2018 Junkers JU52 crashed in Switzerland
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Empty Weight 5.720 kg max. Takeoff Weight10.500 kg
Payload approx 2000 kg, so APS 7720 kg add fuel, add ISA +17, add mountain weather, add engine issue.
The investigators will deliver their report in due course, but in the meantime this a tragedy for 20 families.
Deepest condolences to those affected, this is terrible.
Payload approx 2000 kg, so APS 7720 kg add fuel, add ISA +17, add mountain weather, add engine issue.
The investigators will deliver their report in due course, but in the meantime this a tragedy for 20 families.
Deepest condolences to those affected, this is terrible.
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The plane may have be carrying more weight than usual as this trip included an overnight stay and passengers will have taken luggage. The vast majority of Ju air flights are brief day sightseeing trips.
Empty Weight 5.720 kg max. Takeoff Weight10.500 kg
Payload approx 2000 kg, so APS 7720 kg add fuel, add ISA +17, add mountain weather, add engine issue.
The investigators will deliver their report in due course, but in the meantime this a tragedy for 20 families.
Deepest condolences to those affected, this is terrible.
Payload approx 2000 kg, so APS 7720 kg add fuel, add ISA +17, add mountain weather, add engine issue.
The investigators will deliver their report in due course, but in the meantime this a tragedy for 20 families.
Deepest condolences to those affected, this is terrible.
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I was wondering the structural integrity till I just found this:
Its main spar was replaced recently as one source quoted but I could not verify this:
https://www.jetphotos.com/photo/8624142
Its main spar was replaced recently as one source quoted but I could not verify this:
https://www.jetphotos.com/photo/8624142
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BMW
Really tragic. I am acquainted with one of the engineers who donates his time to help service the engines on these aircraft. He tells me these are the only JU-52s still flying with the BMW 132 radial engines which were essentially reverse-engineered versions of an earlier P&W R-1690 Hornet design but with metric measurements throughout. All other JU-52s either shipped with P&Ws or were switched in later life, apparently due to ease of sourcing compatible parts. The engineers at Dübendorf laboriously and lovingly maintain these unique aircraft and apparently flight:maintenance hours ratio is well over 30. They are a common, beautiful sight all over eastern Switzerland and I hope this awful accident isn’t the end.
No, this is not the true. The max gust at Crap (Rock) Masegn at the time was a Max of 48 kph Hourly gusts in the area
And of course, unless my arithmetic is daft, 48 kph is approximately 25 knots,.
Without lots of local knowledge & experience (which the crew evidently had) I'd be reluctant to fly a light wing loading aircraft immediately downwind of some impressive hills/mountains, especially one with large span and probably fairly poor roll authority by modern standards,. I'd imagine 'challenging' describes it well. As a sailplane pilot and tug pilot I have a lot of respect fro mountain & wave turbulence, I also have a lot of respect for the mountain flying skills of the people in the various Alpine countries.
Cheers,
Biscuit74
Last edited by biscuit74; 5th Aug 2018 at 20:54.
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Stall ?
I would like to call attention to the picture originally linked by Kerosene Kraut (post 33). This was apparently a screen grab from a video. The "smoke" trail behind the aircraft lacks a focal point on the aircraft and an ominous explanation could be condensation in disturbed air behind the aircraft. I would post the picture, but this site is acting crazy.
Tail feathers perhaps ...
With the plane still there without a post crash fire and likely some video coverage from passengers I will be surprised if they don‘t get a solid explanation in the upcoming weeks. There are lots of possible scenarios but why start guesswork when the evidence will come up soon.
With the plane still there without a post crash fire and likely some video coverage from passengers I will be surprised if they don‘t get a solid explanation in the upcoming weeks. There are lots of possible scenarios but why start guesswork when the evidence will come up soon.
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Condensation can be excluded...but maybe look at this
Just before crash time TCU only left very small gaps in the Segnas Pass area
Sat pic 1445 UTC, other times via menu
And just north of the pass, they already were at CB stage five minutes later
Radar crash time
To them, this must have looked like a closed curtain assuming there is no radar in front?
The main activity was north of the pass, I don't know what happens when you see close to the ridge that you have to choose which TCU or CB you want to fly into?
Sat pic 1445 UTC, other times via menu
And just north of the pass, they already were at CB stage five minutes later
Radar crash time
To them, this must have looked like a closed curtain assuming there is no radar in front?
The main activity was north of the pass, I don't know what happens when you see close to the ridge that you have to choose which TCU or CB you want to fly into?
Last edited by weatherdude; 5th Aug 2018 at 22:09. Reason: Typo
This might be the reason for the 180.
Still doesn't explain what seems to have been a fairly brutal stall.