[Tzfat]

Big heads up. A pilot CANNOT get locked out of the cockpit, unless the remaining pilot means to lock him out. I can’t disclose how, but suffice it to say there are features to prevent a remaining pilot from locking out by incapacitation. The remaining pilot had to FORCE the outside pilot to stay locked out. Definitely suicide. Likely Amish.

[dragnet2]

Besides the door lock mechanism, how would you force a lock out?

Could the pilot have locked the door per procedure then had a big medical issue, heart attack etc?

[Iron Munro]

The remaining pilot had to FORCE the outside pilot to stay locked out. Definitely suicide. Likely Amish.

Hey Rudi - That new blonde stew just called in from the back. She needs help getting her garter belt untangled.

Thanks Mohammed, I'll go back and give her a hand.

[BatGuano]

Well, it CAN be that a pilot is locked out of the cockpit. It happened recently on a major air carrier here in the USA!
It happened on JetBlue in 2912. The co-pilot locked the Captain out because he was acting weird...
Delta Capt. locked out by a door malfunction in January of this year!
So, yes the remaining pilot can keep a pilot out and yes, doors can malfunction.
Wait for more information to come, if the powers that be will release same.

[dragnet2]

Outside keypad for access and inside deadbolt for emergency?

[SteveAustin]

I just want to thank you for all of your insightful posts today. They have been very interesting to read and helpful as we try to grapple with this story.