Would also like to say as previous post:
Everyones an expert on the ground.
Eagle Air is part of Air New Zealand, It is not another crappy african 1900 operator. Don't try and lecture me on this I have worked for my fare share. The crews there are some of the most trained and highest standards you could ask for in regards to the 1900. Prober sim and line training ATPL's etc
Air New Zealand was just voted airline of the year award, worldwide! You don't win awards like that if your safety,QA and training is crap!
So don't start presuming when it comes to matters when you don't have or have seen the evidence.
We can all say holy crap at what happened and pray we don't experience it but lets wait until the report comes out and learn from it, what ever turns out to be the reason.
The New Zealand CAA and TAIC will do a fantastic job into finding why this happened! Be it a simple door wasn't closed probably to structural failure? As the CAA in NZ is very progressive with safety.
These things don't get washed under the carpet in the real world.