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Old May 12, 2013, 08:39 PM   #51
rovex
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Originally Posted by dannyp1996 View Post
A pilot friend of mine has seen this. He thinks it could be an issue with the Autopilot. He didn't elaborate.
The autopilot isn't activated on take off?
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Old May 13, 2013, 09:42 AM   #52
Huntn
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Originally Posted by rovex View Post
The autopilot isn't activated on take off?
Some pilots turn the auto pilot on soon after takeoff. If this aircraft had just taken off, odds are low the autopilot was on, although it is possible. However if the autopilot is malfunctioning, the pilots can turn it off.

I don't know if you guys remember, but years ago 737s had some issues with rudder hardovers resulting in at least 2 crashes (Denver, Pittsburg). That was not an autopilot issue, but a hydraulic issue. There could be a mechanical malfunction, but as far as I remember none of them have involved driving the aircraft into a nose high stall.
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Old May 13, 2013, 12:36 PM   #53
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Quote:
Originally Posted by Huntn View Post
Some pilots turn the auto pilot on soon after takeoff. If this aircraft had just taken off, odds are low the autopilot was on, although it is possible. However if the autopilot is malfunctioning, the pilots can turn it off.

I don't know if you guys remember, but years ago 737s had some issues with rudder hardovers resulting in at least 2 crashes (Denver, Pittsburg). That was not an autopilot issue, but a hydraulic issue. There could be a mechanical malfunction, but as far as I remember none of them have involved driving the aircraft into a nose high stall.
I can't remember the exact accident or exactly what happened, but there was one accident where the jack screw malfunctioned which put the plane into a position the pilots couldn't get out of and crashed.
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Old May 13, 2013, 01:22 PM   #54
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Originally Posted by quagmire View Post
I can't remember the exact accident or exactly what happened, but there was one accident where the jack screw malfunctioned which put the plane into a position the pilots couldn't get out of and crashed.
Alaska Airlines Flight 261

http://en.wikipedia.org/wiki/Alaska_Airlines_Flight_261
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Old May 13, 2013, 01:31 PM   #55
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Originally Posted by ucfgrad93 View Post
Yes. ASA261, though the jackscrew issue was only limited to the MD80, DC9s, F100s, and B727s. They weren't applicable anywhere else.

The Denver incident (IIRC, it went down over Colorado Springs) was with UAL (UAL585 to be exact), and that was with a B737, similar to USA427 over near KPIT. Those were problems iwth the rudders on the B737 classic series (-200, -300, -400, and possibly -500 models). Nothing really to do with autopilot there, either.

I think we're still looking at pitch/angle of attack/rate of climb, possible shift in cargo, and stall.

BL.

Last edited by bradl; May 13, 2013 at 01:40 PM. Reason: Fokker 100s, not Fokker 50s.
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Old May 14, 2013, 04:42 PM   #56
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Its a tragic event and the causes of such crashes are doubtless many and complex. Whats required is careful attention to detail.

Sometimes small things slip by even the most careful observers as evidenced by the fact that in three pages no one has commented on the fact that the headline misspells 'Boeing' as 'Boing'!
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Old May 14, 2013, 06:14 PM   #57
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Originally Posted by redsnapper View Post
Its a tragic event and the causes of such crashes are doubtless many and complex. Whats required is careful attention to detail.

Sometimes small things slip by even the most careful observers as evidenced by the fact that in three pages no one has commented on the fact that the headline misspells 'Boeing' as 'Boing'!
I noticed but didn't feel it was worth commenting on. Nor the misspelled "Afganistan".

Nor teh too mising apostrophies in you're frist peragraph. ;-]
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