18 months is not acceptable if the above is true for those of us flying them.
Pace, do you think this is 18 months of kicking heels, long boozy lunches, and lazy afternoons sleeping it off? Or is this the estimate of a bunch of professional investigators trying to give an indication how long it might take to get to the bottom of an unusual accident with no recorded data and a severely burnt aircraft?
I'm sure the folk at Farnborough will be delighted to learn that you think their excellent work is done to such disappointing timescales...