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How the Max 9 door plugs are secured
Nice video presentation on how the door plugs at Alaskan Max 9 row 26 are supposed to be kept closed by 4 bolts. The links skips to a that part of a longer presentation. (www.youtube.com) Más...Sort type: [Top] [Newest]
Seems like there is a very limited number of potential failure modes for NTSB to consider. Not an overly complex mechanism.
Hearing more on other airlines finding loose plugs etc. Maybe require new design. Big headache.
US carriers still have MAX9s in the lineup, all week. Wonder what they're doing. Southwest spared big time using 8s and an order for 7s.
Max 8’s only. Max 7 still not certified and, likely, won’t be getting certification anytime soon.
Disagree. Still an open question of WHY the pressure controller failure lights came on. And open question of just how high the cabin differential pressure reached BEFORE the door plug let loose
Meaning - wait until readout of flight data recorders. If cabin pressure spiked wildly high, there could have been an extreme driving force to blow out the plug door.
Meaning - wait until readout of flight data recorders. If cabin pressure spiked wildly high, there could have been an extreme driving force to blow out the plug door.
There were actually 3 pressure controller failure write-ups on the aircraft since being put in service late October. Alaska must have assumed the controllers were the problem rather than a pressure leak - such as the door plug.
The door has to be "raised" about 1 1/2 inches to clear the 12 plates that normally hold it against the cabin pressure. The springs on the hinges at the bottom of the door help raise the door when it is opened for maintenance. It is prevented from raising with 4 bolts. My take is these bolts were missing. AAR worked on the aircraft to add Wi-Fi. The 3 pressurization problems started after they worked on the aircraft. When I have a problem I go back to the last thing I did.