I've been a long time in read-only mode, felt it was time to contribute.
Originally Posted by
silverstrata
Interesting two graphs.
And of course the 21 second interval in vertical speed cycles, equates very nicely with 10 secs of MCAS trim input and 10 sects of manual trim resetting. Prima face evidence that MCAS was operating in this flight.
Silver
If I've read the second graph correctly, the 21 seconds is measured from 05:39:11Z to 05:39:32Z (per the FR24 data) - corresponding to 225 feet and 600 feet aal.
That seems rather low for the flaps to be fully retracted, for MCAS to kick in, and for 10 secs of manual trim to be completed.
It appears from the same data that ET302 had only just left the runway at 05:38:59Z or a few seconds earlier. From what we know about the system, is it really feasible that MCAS starts operating 12 seconds later?
Apologies if I've misunderstood something.