Originally posted by Moscow Mule
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Reply to: 24 error messages
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Previously on "24 error messages"
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Originally posted by Menelaus View PostRecoveries of FDR / CVR. I'm afraid that the bodies, unless they float to the surface, will need to remain there.
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Originally posted by The Lone Gunman View PostI would have to google it again, but I dont think anyone died.
A test team from the airline were doing acceptance testing.
This involves a full run up of the engines, which on the ground requires all brakes to be applied.
Because the brakes are on and the engines are at full tilt an auto warning sounds as this would be disastrous in normal circumstances.
To disable the warning sounds the test team disabled the warning system (somehow, cant remember details), but the upshot was that the plane went into flight mode and released all the brakes.
I am not certain of all details and have some questions but that is how it has been reported.
One question is that all these aircraft have a "weight on wheels" sensor so the system should know it is on the ground.
Not sure the test team were pilots, but humans had a hand in this.
The ultimate testers.
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Originally posted by Menelaus View PostPilot error with the pilots still alive? Perish the thought.
EDIT: Oh, wait. This isn't the RAF.
A test team from the airline were doing acceptance testing.
This involves a full run up of the engines, which on the ground requires all brakes to be applied.
Because the brakes are on and the engines are at full tilt an auto warning sounds as this would be disastrous in normal circumstances.
To disable the warning sounds the test team disabled the warning system (somehow, cant remember details), but the upshot was that the plane went into flight mode and released all the brakes.
I am not certain of all details and have some questions but that is how it has been reported.
One question is that all these aircraft have a "weight on wheels" sensor so the system should know it is on the ground.
Not sure the test team were pilots, but humans had a hand in this.
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Originally posted by Moscow Mule View PostMost likely too deep to recover big lumps of plane, but well within ROV depth limits for video inspection.
There's a few manned submersibles that can get that deep, but I'm not sure I see the benefit.
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Originally posted by The Lone Gunman View PostNot a failure from what I have read. Incompetence on behalf of the testing pilots.
When they pulled the fuse thing the planes systems automatically released the brakes as it thought it was in the air. This system is designed to stop the plane landing with its emergency brakes already applied and the obvious possibilities of that one.
This was a couple of years back now and has been doing the rounds. There are much fuller descriptions on the net than the one posted.
EDIT: Oh, wait. This isn't the RAF.
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Originally posted by Menelaus View PostOMFG. Ouch!
Brake failure would seem to be the obvious answer to this one.
When they pulled the fuse thing the planes systems automatically released the brakes as it thought it was in the air. This system is designed to stop the plane landing with its emergency brakes already applied and the obvious possibilities of that one.
This was a couple of years back now and has been doing the rounds. There are much fuller descriptions on the net than the one posted.
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Originally posted by threaded View PostTrueish. Here's one that amused me: some company were ground testing the engines, and because some other system kept making warning noises they pulled a fuse to shut it up, which had the knock on effect of making the aircraft brakes release, it would have jumped its chocks even if they'd placed some, and off it went. Why the crew never got round to throttling back the engines before they crashed into the wall at the end of the runway, and totalled the aircraft, just goes to show you how complex these beasties are.
linky
And this scenario has happened at least twice to my knowledge (another happened in Canada)
Brake failure would seem to be the obvious answer to this one.
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Originally posted by BrilloPad View PostEven if they find the wreckage its going to be about 2 miles down so very hard to recover?
There's a few manned submersibles that can get that deep, but I'm not sure I see the benefit.
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Originally posted by zeitghostI read somewhere that the controls change state as the airspeed varies... which might be a tad interesting.
And the pilot has no control over the state the control system is in...
linky
And this scenario has happened at least twice to my knowledge (another happened in Canada)
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They have found two bodies so closer to finding the wreckage.
We need answers
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Originally posted by threaded View PostIt's pretty common in small aircraft for insects to get in there. Some even fit covers to prevent this, which brings it own problems... What tends to have happened is that the pilot hasn't taken the cover off, or checked the opening properly. Then what happens, if they're lucky, is they get a stall warning as they start to roll down the runway, if they're a little unluckier they abort take-off at a higher speed than they think they're going (because they're getting incorrect speed indications) and hit some barrier at the end of the runway.
I must ban Mrs BP from watching that programme.....
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