Originally Posted by HalinTexas
Since they followed and summarily rejected the QRH and improvised, then who is at fault, or at least share fault?
The report clearly states,
after they turned off the stab trim, "At 05:43:04, the Captain asked the First Officer to pitch up together and said that pitch is not enough."
Then there were momentary electric trim inputs; I think they realised that they didn't have enough pitch control and decided to try the electric trim again. What would you have done? Just sat there with the switches off because that was the end of the QRH drill and slowly speared in?
There was no reason to turn the electric trim switches back on, but since they did, they should have used it! If they had, they could have saved the airplane.
I think it was a great idea switching them back on. A great pity though that they didn't follow through by trimming against the continued MCAS trim.