Chinook - Still Hitting Back 3 (Merged)

[Seldomfitforpurpose]

Originally Posted by cazatou

Seldom

Perhaps you have not read the findings of the Investigating BOI - they were quite specific that the forecast weather would have required flight in accordance with IFR in the vicinity of the Mull. The actual observed weather at the Mull was considerably worse than the forecast weather - yet the aircraft average groundspeed from the radar fix on leaving Belfast CTZ until impact was 158 kts. In this respect you may recall that the AAIB assessment of the aircraft speed at impact was "approx 150 kts" whilst attempting an escape manouvre.

One other interesting point is that if the Chinook did slow down to an IAS of between "60-80 kts" (as described by the Yachtsman) then it would have had to have exceeded Vne at some stage of the transit in order to have achieved the known parameters prior to impact.

Even a mere tea boy like me knows that there is huge difference between forecast and actual weather, forecast to be raining here now but just going outside in flip flops, shorts and sun glasses to cut the grass.

Actual observed as by whom Surely the only actual observed that has any meaning in this instance would be that of those on the flight deck

As has been suggested by others those with no actual experience of SH low level OP's are always going to be very poorly placed when discussing this incident.