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-   -   Intersky Bombardier hits Power Cable (https://www.pprune.org/questions/413994-intersky-bombardier-hits-power-cable.html)

space pig 3rd May 2010 09:56

Flight İnternational:

InterSky, however, describes the weather during the approach as "normal". It has not indicated the type of approach being conducted when the incident occurred.
But managing director Claus Bernatzik says: "The aircraft seems to have been located, on approach, a few metres off the intended flight path.:confused:

İf it is true they hit a 9m high powerline 1000 m from the runway,surely they where more than a few meters from the intended flight path.

either this guy bernantzik does not know what he is talking about or he is trying to cover the whole thing up with soft talk, or both.

if the wx was good according to the company it does not make sense why a pilot with "decades of experience" will make 60 degr bank turns and hit a powerline 1000 m before the runway. sounds more to me as a pilot trying to find the runway in fog conditions..........

luckily nobody hurt

space pig 3rd May 2010 10:22

could not open the pictures but the site is Marina di Campo (Isola d'Elba): Dash Intersky da ZRH trancia cavi elettricità - Pagina 3 - I forum di Aviazione Civile

halfway the page are the pics

hopefully the moderators will allow the adress as it clearly shows it was indeed very foggy.

Also important to note is that with a damaged prop but gear and fuselage intact the aircraft can only have hit the high voltage powerline in a very steep bank close to the ground.

the gpws must have sounded continiously or was it perhaps switched off as to avoid nuisance warnings:E like close by hills and terrain?

Airbus_a321 3rd May 2010 10:40

obviously the weather was not that bad. you can not fly an approach like this with 100m vis.
somewhere else I found that the met station should be around 8nm southeast of the airport, so not very reliable

HeadingSouth 3rd May 2010 10:53

bank angle of 60° ? not bad a manoeuver that close to terrain. I however dare not to believe that bank angle indication when hitting the cable.
If the power line is 9m above ground and you'd hit it with the prop at a bank angle of 60° then you'd probably touch the ground with the wingtip the very next second.

somehow lucky they hit the line with the prop, not with the wing or gear...

clunckdriver 3rd May 2010 10:55

Maybe they should put a hook on Dash Eights, seems a shame to waste such a handy wire!

Air Tourer 3rd May 2010 10:56

9 metres?
 
Well it seemed to me to be high ground all the way in, so the 9m would be just above ground height. Some trees looked in danger of getting wacked also, in the video. And the undercarrage length has nothing to do with anything in this context.

HeadingSouth 3rd May 2010 12:44

Flying a meter higher and - well if the prop had missed the line and the line would have tangled up in the wheels somehow... not a nice thought.

I once saw a Mooney M20 being entangled with a wire. It ended catastrophically for the Mooney. And yes I know a Dash 8 is a different set of plane. Still...

Hechter 3rd May 2010 13:20

Hello Guys,

i think the distance is not true.

From what i know, the wire is somewhat 150-200 Meters away from the RWY.

Visibility was not bad, more than 10 Kilometers.

Pilot is called to be one of the experienced @ InterSky, with at least 30years flying and +20.000flthrs

mickjoebill 3rd May 2010 13:38


since the prop is mounted ahead of the main gear, then a cut line wouldn't have damaged the wheels - surely the lack of gear damage is a red herring?
You are all assuming it passed over the wire!


Mickjoebill

hawkerpilot 3rd May 2010 14:02

"From what i know, the wire is somewhat 150-200 Meters away from the RWY."

There is another wire as you can see on the airport diagram a page earlier

"Visibility was not bad, more than 10 Kilometers."

That does not agree with the pictures taken right after the accident, the hill tops are not even visible and the cloudbase is low

it does not make sense then that he hit a cable so far from the runway and banked 60 degr if the wx had been so great he?

"30000+ hours"

does not mean a thing.even with all the gadgets on board.

something smells not right about this accident...the facts do not add up.....unless the cable was raised 1000 ft up:ok: or the pilot was not wearing his glasses and the co pilot happened to look just the other way:bored:

or was he afraid to speak up or interfere? was he flying with a management pilot perhaps, intimidated by his experience:E?

an old pilot told me once:your priorities in flying should always be :Life-Licence-Job. that has and will not change.fly safe.

Neptunus Rex 3rd May 2010 14:29

How many hours did the F/O have?

Krapula 3rd May 2010 14:44

As written in the italian forum, from which the photos where taken, such photos where shot on 02/05/2010 while the accident happened the day before.

ATC Watcher 3rd May 2010 15:04

Hitting any sort of electric cable ( i.e with metal iside) at say 150 Kts will go through metal like a cord in butter. Hitting a propeller only and not have any fuselage colateral damage is very strange I would say.

I have some years ago seen pictures of a glassfiber glider cut in 2 ( unfortunately also the pilot ) by a small cow-fence electric wire during a attempted landing into a field , and the estimated landing speed of that glider was less than 60 Kts.

Blues&twos 3rd May 2010 15:32


Hitting a propeller only and not have any fuselage colateral damage is very strange I would say.
I have to agree I'm struggling to understand how the prop was damaged and nothing else. If the a/c was banked, the wing surely would have been damaged as well as the prop. If the a/c flew over the cable, the fuselage would have been damaged as it 'hangs' lower than the bottom of the prop disc.

SomeGuyOnTheDeck 3rd May 2010 15:58

At the risk of making an idiot of myself again, can I suggest that there may be evidence from the photos of minor fuselage damage adjacent to the prop?

Between the last 'w' int the 'www.t-city.de' marking and the window above, there is what looks like a dent. To the left and below the first 'w' is a liniar mark running down and back, and running from the lower end of this forward and down is what looks like more damage. Whether this was caused by the wire, by fragments from the prop, or indeed is just dirt, I don't know.

Piece of Cake 3rd May 2010 18:04

SomeGuyOnTheDeck-There is indeed some damage to the fuselage, just under the window and also about 4ft below that (and slightly aft), these dents are outside the re-inforced composite panels which are desigend to protect the fusealge from ice being shed from the props.

There is also a hefty dent on the front right hand side of the engine cowling, in the 8-9 O'clock position in relation to the prop... that's expensive.

SomeGuyOnTheDeck 3rd May 2010 18:43

Yes, Piece of Cake, I'd missed that. Possibly the spinner was lost in the incident too. At a guess, I'd say the wire was whipped round as it hit the prop, from the marks on the fuselage. Nasty...

Though the map seems to indicate power lines running roughly east-west across the flightpath, the photos also show other wires (possibly phonelines) running north-south. I wonder if it was one of these that was hit? This might explain how the prop got the worst of it, though it rather implies that there would have been a near-miss with a pole or two.

Edit ---
Looking at the map again, the power lines are more or less aligned with the flightpath at some points anyway, rather than perpendicular to it.

TDK mk2 3rd May 2010 19:15

The right hand side windsheild wiper looks to be bent upwards at the inboard end.

I was parked next to this aircraft at ZRH on Saturday and and noted the Captain doing his walk around. Not that I have anything to say about that but I almost went over to ask what airline they were due to the hybrid colour scheme.

Very glad to be looking at a lightly damaged aircraft on the net rather than reading the headlines in the paper.

VFD 4th May 2010 02:26


You are all assuming it passed over the wire!
I think you have got it if you see the damage to the prop is at about the diameter that is about the distance to the top of the fuselage.

Runway101 4th May 2010 10:27


Originally Posted by Piece of Cake
that's expensive

The airlines CEO yesterday estimated the damage to be 100k Euro, mostly for the rental of a replacement a/c.

Zwischenfall auf Elba: InterSky rechnet mit 100.000 Euro Schaden | Austrian Wings

He also told the press that visibility was 10km at the time of the incident.

.


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