PPRuNe Forums - View Single Post - Alaska Airlines 737-900 MAX loses a door in-flight out of PDX
Old 11th Jan 2024, 17:36
  #735 (permalink)  
DaveReidUK
 
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Originally Posted by BigJETS
This is true, you would also need to remove upper lock bolts. However, your options for removing the door are 1. Disassemble the double-nut / washer atop each spring. Then pull the cotter pins, and remove the lock bolts. To which you slide the guide blocks off the springs and hinge. (reassembly is trickier as you must reengage the hinge into each block simultaneously). OR option 2. just remove 4 hex bolts (into nutplates no less) with your air ratchet and detach the blocks from the plug. Makes reassemble easier and you need not procure 2 more cotter pins. I think option two is what they do. Edit: Also, less assistance is needed outside for reassembly because the attachment is made while plug panel is in final position, rather than maneuvering the plug around to engage the hinges which I assume would involve another hand.
Can't argue with that.

And, given that that's not the way of removing the door that's provided for, it wouldn't be altogether surprising if it was accompanied by official denials that it was being done at all.

That said, if the lower lock bolts remained in situ, would inadequately-secured hinge bolts allow enough play for the stops to disengage? If not, we're back to square 1 in terms of an explanation for what happened.
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