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Would the IV-P door open in flight, if
unlocked from a latched, initial condition?. With ground
tests only, here in the hangar, it seems like
Bernoulli's forces, pulling outward against the large
surface area of the door, against the latch, would cause
the lower hooks to remain engaged, even after the handle
is fully open.. On the ground, try (pushing or) pulling
outward on the door to simulate this negative
pressure(inflight). It seems like the lower latch
hooks could jam and interfere with a bail out attempt.
This seems to be the result. if you go from fully
latched, to unlocking the handles. I wonder if the
incidents mentioned might have happened from a
completely unlatched condition on takeoff? This is also
more likely scenario, to strike the right flap?
A concise description of such
an inflight experience, and your observations of the
sequence, would be very useful. Do vibrations or
oscillations cause the door to separate? Was there some
other structural failure of the door, causing it to
open? When did it happen in the sequence of events? It
would be important guidance, in designing or
considering bailout systems or egress methods, inflight.
Thanks
Bill Miller
From:
If it hits
the tail you will probably lose the aircraft.
AvSafe
Jeff Edwards
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