My last such experience: June 2010 PIA Frankfurt - Amsterdam - Lahore - Frankfurt … At the sight of this age old Airbus 320 i thought “Ya Allah Khair” … Although i had Business Class Booking and the Service was very good but when things go wrong doesn’t matter where u r sitting
My booking said it would be either an Airbus 330 or a Boeing 777
this is just one of the so many theories being discussed, nothing substantial on it... as far as the investigation is concerned, i think there is no really report out yet... and i don't expected it to come either
They should involve NTSB who r experts in this field
Air Blue shaking should not deter you form flying it. They are all designed to shake in turbulence much more than they do in reality. The only reason why you felt it more on Air Blue is because its a smaller small plane than the larger 777, 340, 747 and it could have just been coincidence.
See it the other way .... just when when turbulences hit PPL start remembering Allah SWT :D