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To: Don Joe
There was a Japanese 747, maybe 20 years ago or thereabouts, that somehow lost the vertical stabilizer. (Collision with another plane? I don't remember.) Anyway, the pilots managed to keep it aloft for quite some time by gingerly handling the engines and the remaining control surfaces, but they were not able to land it.

On a sorta related note, I also vaguely recall an incident with a domestic airliner in the mid to late eighties, in which systems failed and the pilot had NO control over any control surfaces at all, and managed to fly the thing in somewhere by manipulation of the engines and it resulted in a fairly controlled crash landing that saved many lives. Remember that one?

MM

42 posted on 11/16/2001 1:22:15 PM PST by MississippiMan
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To: MississippiMan
"Remember that one?"

United Airlines DC-10 flight out of Denver. Lost the hydraulics. Brought it down and landed in Sioux City, maneuvering only by manipulating engine power -- to turn and to lose altitude.

Helluva job of flying...

44 posted on 11/16/2001 1:22:24 PM PST by okie01
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To: MississippiMan
That was the Sioux City, Iowa crash in 1989. Amazing work by Captain Al Haynes and the flight crew on that one. They'd lost the #2 engine on their DC-10, part of which destroyed the central hydraulic control package. 296 crew & passengers. 185 survived the 'crash' landing. RealMedia video clip here. (airsafetyonline.com)
45 posted on 11/16/2001 1:22:26 PM PST by newzjunkey
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To: MississippiMan
"Remember that one?"

Now that you mention it, I think I do, but vaguely.

I wonder if the fly-by-wire computers software could be written to handle catastrophic events? I know that some military planes are so twitchy that they'd crash instantly if their control surfaces weren't micromanaged by the computer (i.e., the no-tail stealth planes). Why couldn't civilian airliners software be programmed to handle things like loss of the tail, or a jammed control surface? The pilots could continue to use the flight controls normally, and the software would translate their movements into whatever it took to maintain stable flight. So, if the tail falls off, and the pilots try to steer, the computer would adjust the speeds of each engine as necessary to steer the plane, and so forth.

49 posted on 11/16/2001 1:22:28 PM PST by Don Joe
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