"the AAIB report says - ....If these levels genuinely reflect the amount of alcohol present in the blood at the time of the accident, it is possible that they may have produced some decrement in performance which may have been prejudicial to the safe conduct of the flight."
A lot of posters here have jumped straight onto the alchohol aspects of this accident. Seems to me the AAIB have a far more balanced view than some ranters on here. The limit for flying is very low, and I think the AAIB's comments take this into account.
This pilot (whichever of the two was the pilot) should not have been drinking. But the real cause of this tracgedy is flying in IMC without relevant skills, and then having the rug pulled out from under them by an AI failure in IMC.
The alchohol factor is deplorable, but probaly not too significant here. Being in IMC while unqualified is a known killer - to then lose the primary attitude instrument while in that demanding situation pretty much guarantees a tragic ending.
SSD