I admit, I didn't read all post of that mega thread, but I read that prelim. AAIB report and have learnt an amazing amount about EC135's fuel system.
I waded thru many ponderings and assumptions about the pilot's action or lack thereof, his choice of landing site etc..
But I'm having trouble aligning some simple "facts":
- The fact that the MRB and TR seem to show now sign of hitting ground while turning (assuming they'd look different even when turning only at min. power off rpm)
- The witness' reports of the pub indicate a certain delay between the noise "where the band made the roof collapse (cheers and laugther), band picks up playing again..." and the actual roof/floor collapse (it is a vault, hence people and band were in the cellar, right?)
Considering 1
- either the pilot actually autorotated the ship successfully to the ground (roof actually) and the rotors stopped "fully" (rotor brake..) before falling through the roof
- or he literally slammed
onto the roof with rotors stopped (rather unlikely, in the light of statements about local building quality in that area vs. a 2t a/c)
Considering 2 (time span 3-10 secs??)
That witness info insinuates some kind of controlled roof landing. But then I do not see how the blades could have stopped. Are 10 secs enough to stop the rotors ?
Somehow the picture in my mind is a correctly landed EC
with rotors stopped, on a flimsy roof. Put in a nutshell: had the roof not collapsed noone would have been injured, refuel and take of again, kinda...
Thus:
What is the current
forum's "consensus" regarding the
last 20 secs before the roof collapsed?