Originally Posted by
DaveReidUK
Underfloor container hold doors on widebodies are rarely plug-type. They certainly aren't on the current 777 and I'd be very surprised if they are on the 777X.
I would suspect an issue with the locking mechanism rather than any significant structural failure.
I would expect max diff will have been tested prior to wing loading. If that is true it is not a locking mechanism failure, but stuff is bending/breaking in the structure when wing loading is applied.