General Category > DB Cooper

Clues, Documents And Evidence About The Case

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nickyb233:
You are not allowed to view links. Register or LoginEither the plane has been shutdown for more than 30 minutes or hydraulics are failing..

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According to the new owners the aft stairs are in perfect working condition?

Chaucer:
There’s clearly no “springboard action” here. There’s no way aft stairs like this could cause any oscillations or pressure bump.

Shutter:
They are not operating correctly in the video. the spring board action appears to be taken a little too far. they only go up and bounce a little coming back down..

Also, you have wind load on the stairs pushing them upward

Chaucer:
You are not allowed to view links. Register or LoginThey are not operating correctly in the video. the spring board action appears to be taken a little too far. they only go up and bounce a little coming back down..

Also, you have wind load on the stairs pushing them upward

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For there to be a pressure bump, there had to be rather significant bounce back. That doesn’t appear to be possible with those stairs.

Shutter:
Trying to test them on the ground isn't going to help any. wind loads are forceful, very forceful and damaging. we see this with Hurricanes. the video still capture the stairs almost closing even with the hydraulics pushing down.

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