Originally Posted by
quentinc
I don't see the details in the preliminary report about who was flying and instructions to continue trimming, that you are reporting. Perhaps you have seen some other information. I will say the preliminary carries the same information in the appendices about operating CUTOUT. It does NOT say its fine to leave the electrical trim running, provided you are careful to trim up.
That's fair. I'll chase up a reference. Regardless, your characterisation of the FDR (that pilot-trim-up was involved in a losing tug-of-war with MCAS-trim-down) is incorrect. It is only the final 4 MCAS-commanded-nose-down trim commands that result in increasing nose-down attitude. The previous 21 such MCAS-commanded-nose-down trim commands are fully counteracted by the flight crew resulting in essentially level flight at 5000 feet for 6 continuous minutes.