Originally Posted by
aeromech3
JAL123 a B747 RPB repair failure leading to an over pressurisation in the tail section comes to mind, though it is unlikely to have been started in this case by a cabin air loss as blow out vents are now designed to cope with this..
Plus the aircraft was at cruise for quite some time.
If it was a structural failure due to pressurization, it would have occurred a lot sooner in the flight (i.e. during climb, just like JAL123 and CAL611).