Originally Posted by
Longtimer
Maybe not the 737, If the following is correct.......
June29,2019 ·
Flight Deck Door Pressure Relief Latch,
Flight deck door has 2 blowout panels for case of rapid decompression in the flight deck
This system is necessary as all the cabin air would rush through, and possibly over-stress, the flight deck door
Pressure Relief Latch is set to release under pre-determined pressure
When released, the blowout panel will open into the flight deck and equalize the pressure between the cabin and flight deck
Should there be a rapid decompression in the cabin, the flight deck door is able to withstand the pressure difference as the area of the flight deck is relatively small (pressure will equalize through the leaks through the door, blowout panels won’t open)
That's consistent with what I've observed - the flight deck door blowout panels are 'one way' - they allow the air to move
into the flight deck, not
outward towards the cabin.
Always wondered a bit about that...
BTW, I've not observed that to be exclusive to the 737...