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Old 31st Dec 2017, 22:57
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Concours77
 
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Originally Posted by Concours77
Originally Posted by booke23 View Post

the CAB report is clear that the power lines were severed about 70 degrees from the horizontal. The investigators on the ground at the time won't have just guessed this, it will have been measured and is a major piece of evidence as to the bank angle at impact.....when you then consider that the captains AI was at 90-100 degrees at impact (possibly unreliable but corroborates the power line evidence). This makes a very strong case for the bank angle.u


Hi. “...the Captains AI was at 90-100 degrees at impact.

If the aircraft continued to fly (remained aloft) after the impact with the Railbed, presumably the AI was still serviceable, and had no bearing on bank angle at the gravel RR embankment. Right? How does a gyro instrument on the dash get squashed with a wing tip impact?

Which impact? Likely the second, the one that involved the cockpit?

For me, the 30 degree maximum bank theory doesn't hold up unless you can dig up some evidence that the CAB made an error in the measurements of the power cables AND that somehow they interpreted the marks in the AI wrongly.

Yes. If they are counting on the AI to provide bank angle at Railroad impact, they are barking up the wrong tree...
BRDubois, does this help in any way to challenge the “ninety degree bank?”

I think it does. The AI survived the impact at Railroad tracks. it likely showed bank angle at second, cockpit impact, no?
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