Do you guys have much luck opening the door before you deflate
the door seal? I tried to pressurize the cabin with the door seal
deflated…..didn’t have much success with 32 InHg manifold
pressure. I suspect with the engine at idle, it wouldn’t be much
better.
Paul
pointed out the obvious: a door with even 1 psi behind it is
dangerous. (1 psi times 600 or so? I don't have the
measurements)
So
I do buy the argument that at low throttle settings, and under normal
circumstances, you aren't going to have much residual pressure in the
cabin. But there are lots of possible failure modes here: a)
pressure controller malfunction b) pressure controller set way below landing
altitude c) exhaust valve is not operating correctly - not enough cabin
exchange rate. These may argue for the pressure switch
The
suggestion I like the best is "check cabin pressure before opening the
door".