Aer Arran Incident - Manchester
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Aer Arran Incident - Manchester
Aer Arran ATR has had a brake failure on stand 7 this morning. No injuries however a good deal of damage caused as propellers hit stop mirror!!!
Last edited by 1station; 21st Oct 2009 at 11:33.
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Were these folks taxiing on one engine...?
The reason why I'm asking is that coincidently only a couple of days ago talking with a line trainer on the merits of why we should/shouldn't single engine taxi at my company after watching an Arann ATR taxi on one engine to the R'wy at BHX, he told me about a similar incident on an ATR when the crew experienced a Hyd problem whilst single engine taxiing and thus parked themselves inside a building..? Just a question, probably no connection......
Hope all involved are well.
The reason why I'm asking is that coincidently only a couple of days ago talking with a line trainer on the merits of why we should/shouldn't single engine taxi at my company after watching an Arann ATR taxi on one engine to the R'wy at BHX, he told me about a similar incident on an ATR when the crew experienced a Hyd problem whilst single engine taxiing and thus parked themselves inside a building..? Just a question, probably no connection......
Hope all involved are well.
Last edited by Jetgate; 21st Oct 2009 at 21:54.
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See the fire crews are putting down sand in the phot, was there a fuel/hydraulic leak caused by the incident?
Looks like they totalled that GPU pretty nicely, bet it was a bit of a shock to the pax in the windows next to the props...
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In word...expenisve....new blades and an probably an engine change. Wouldn't have thought it would take too long to accomplish the change.....assuming they have a spare engine.
Looks like the brakes just failed rather than a hotel mode problem given the position of the ground services. I'm assuming the hydraulics are routed through that area?
Looks like the brakes just failed rather than a hotel mode problem given the position of the ground services. I'm assuming the hydraulics are routed through that area?
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Hydraulic bay located left hand gear fairing.
As for the taxi on one engine, as long as the ACW BTC is made, you will not lose hydraulics when taxing on one engine. Besides the fact that you have emergency braking available should the pumps fail. Problem seems to be loss of fluid ( a lot of it) and so no pressure in the system, no brakes!
As for the taxi on one engine, as long as the ACW BTC is made, you will not lose hydraulics when taxing on one engine. Besides the fact that you have emergency braking available should the pumps fail. Problem seems to be loss of fluid ( a lot of it) and so no pressure in the system, no brakes!
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with either prop spinning there should be no hydraulic redundancy.
I don't think a single engine taxi would be an issue unless when shutting down the no:1 the ACW BTC didn't close for crossfeed and they may have lost the use of the parking brake .
I don't think a single engine taxi would be an issue unless when shutting down the no:1 the ACW BTC didn't close for crossfeed and they may have lost the use of the parking brake .
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Thanks for the info Powdermonkey.
The last pics show some blades which are probably of more value on Ebay following this event.
Does anyone know if they have to change the engine also? I'd imagine the impact has put a faily sizeable shock through the reduction gearbox but would this necessitate an engine change? Out of curiosity, does anyone know how they managed to stop the aircraft? I don't think the post/mirror they hit would be 'sturdy' enough to stop the aircraft.
The last pics show some blades which are probably of more value on Ebay following this event.
Does anyone know if they have to change the engine also? I'd imagine the impact has put a faily sizeable shock through the reduction gearbox but would this necessitate an engine change? Out of curiosity, does anyone know how they managed to stop the aircraft? I don't think the post/mirror they hit would be 'sturdy' enough to stop the aircraft.
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Take a closer look at the pics.
Its more obvious when you go take a real look at it, but the number 2 has been pulled of the engine mount and is hanging down at quite an angle! i think engine change is the least of the worries, how about a new spare...
Its more obvious when you go take a real look at it, but the number 2 has been pulled of the engine mount and is hanging down at quite an angle! i think engine change is the least of the worries, how about a new spare...
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as long as the ACW BTC is made, you will not lose hydraulics when taxing on one engine
Papa2charlie
even if the green hydraulic system (supplying the landing gear and brakes) is gone there are still the emergency brakes which will give a very limited 5 applications on the parking brake detent
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Courtesy of BRAL from the main forum thread.....
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I'd be stunned if the engine has been pulled from it's mounts. I know from larger engine types that the cert criteria are very stringent when it comes to mounts and a simple collosion like this should not pull the engine from its mounts. The metallic band around the nacelle is a standard feature of the PW120 series and I'm guessing is to cater for thermal expansion in the nacelle?
Thaks for the info quazz.
Thaks for the info quazz.
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Quazz As I stated this is due to loss of hydraulics, blue and green systems are fed from same tank. I was explaining that single engine taxi isnot an issue as long as your Np is generating ACW on one side, PROVIDED no leaks or fluid loss! The fact the emergency or parking brake accumulator did not seem available indicates complete hydraulic fluid loss, as indicated by the long wet trail down the center line! Engine mountings are fine btw! New prop yes, reduction gearbox....... mmmmmm As for the last post by "non iron" how does your statement help anyone????? Do u know the full circumstances?
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Aer Arann incident
I couldnt imagine that the engine would have been pulled on its mounts, as ive seen larger turbine engines withstand far greater impacts and not budge, those atr 72 engines always look like they are hanging at an angle anyway, as for the shock factor engine will probably have to be removed and a shock loading inspection done. Mounts will probably under go NDT inspection aswell.
By the way the GPU looks fine to me, i think it was the parking mirror that took all the impact.
Anyway im glad nobody was hurt, looks like a serious hydraulic fluid leakage!!
By the way the GPU looks fine to me, i think it was the parking mirror that took all the impact.
Anyway im glad nobody was hurt, looks like a serious hydraulic fluid leakage!!
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non iron
A big hunk chewed out of the leading edge is hardly a "nick".
I noticed that you were quick to bag the crew on the other thread as well. Assuming that the trail of fluid being attended to by the RFS is hydraulic fluid, they had a major hydraulic leak during the last part of their parking manouver. This is obviously the worst possible time, after they had checked the brakes and just before they were due to stop. Almost no time to take corrective action.
I know quite a few RE crews, there are a few 10,000 hour skippers there, and most of the rest have a lot of experience. your comments are way off base.
A big hunk chewed out of the leading edge is hardly a "nick".
I noticed that you were quick to bag the crew on the other thread as well. Assuming that the trail of fluid being attended to by the RFS is hydraulic fluid, they had a major hydraulic leak during the last part of their parking manouver. This is obviously the worst possible time, after they had checked the brakes and just before they were due to stop. Almost no time to take corrective action.
I know quite a few RE crews, there are a few 10,000 hour skippers there, and most of the rest have a lot of experience. your comments are way off base.
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Remoak
Totally agree with your last
If your are even only doing 3 to 4 miles an hour and you hit something you know
about, you don`t much time to react and think of another option when you have only 30 or so feet before you hit the pier
Ian B
Totally agree with your last
If your are even only doing 3 to 4 miles an hour and you hit something you know
about, you don`t much time to react and think of another option when you have only 30 or so feet before you hit the pier
Ian B