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Posted for "Douglas W. Johnson, MD" <Lancair1@bellsouth.net>:
Dave: What do you mean by the "first latch"? Is that the one at the top
rear of the door near the gas strut?
Doug Johnson
Discovered the problem was human error. The door on this IVP and for that
matter the only other one I ever flew required that the first latch be well
over center and in order to do so, you would hear two distinct clicks. One
when first closed and the second when a little more pressure was applied to
the handle.
What happened is the first latch was not fully seated to the second click
and
at altitude, the door seal could not stay large enough to bridge the gap.
It was leaking (thus accounting for the slow leak and the rising cabin) and
finally the size of the gap became large enough and the building pressure
strong enough to vent the cabin entirely.<<<
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