Originally Posted by
FlightDetent
The MCAS kicks in, the nose gets heavier. You pull, and trim a bit. The MCAS kicks in again, the nose gets quite heavy, you pull and trim - more, for zero forces - to negate both of the MCAS inputs. If for nothing just to relieve the muscle tension.
Is it the shared view here, that neither of the doomed crew did the above? That they all instead of a good thorough spin just made a couple of "blips" and watched the A/C in VMC hit the ground? While pulling with possibly all four hands on the yokes, fighting the 4x increased elev feel computer and still neither of them touched the rocker switches to relieve that physical pressure, save for those blips?
(My boold in above, times are approximate due to FDR presentation).
Known
facts from, report.
Airspeed at start of first MCAS input 250 kts.
MCAS applied
9 seconds ND trim the ET pilot applied
3 seconds NU trim 6 seconds later.
MCAS acitvated 5 seconds after that but
was interrupted at
6 seconds by
9 seconds NU trim. (possibly interrupted by trim cutout)
Total MCAS 15 seconds ND total pilot NU 12 seconds left the aircraft severely out of trim and just under VMO in under 40 seconds and likely unrecoverable using manual/mechanical trim.
Above is not "blips" those occurred only at end when electric trim was re-activated.