Originally Posted by Graybeard
I hope BEA explains how the cg moved from the automatic 38% MAC, as shown above, and in the initial report, to 29% (or was it 23?) in its latest report.
Conf Iture: Never the MAC could have been to 38% after only 3 hours something in the flight, not with the initial very much forward 23% CG at takeoff time. My own estimate would have put it around 32% at the time of the event, but the BEA now mentions 29% ...
How come BEA didn't know the takeoff cg was 23% at time of first report? Why didn't they do your math?
As long as BEA is being vague and inspiring wild guesses: what is the chance that the takeoff cg was really 30%, and not 23%? You can see where that would lead..
Is cg calculated based only on pre-takeoff W&B, or is it computed constantly from AOA, IAS, ALT and trim?