The AD procedure was a revision to the runaway trim procedure. The first paragraph just repeats the original trim runaway procedure. The rest of the AD procedure addresses the erroneous AOA scenario. To me, the worst mistake in that AD procedure is the second to last sentence, which, instead of saying "Electric stabilizer trim can be used to neutralize the control column pitch forces" before using the cutout switches, should have said something like "You must use the electric stabilizer trim to neutralize the control column pitch forces before using the CUTOUT switches because the manual trim system will not work if the airplane is significantly out of trim." The Ethiopian crew seemed to figure that out well into the event and switched the electric trim back on, but too late to recover.
Last edited by Dave Therhino; 11th Sep 2019 at 00:44.
Reason: clarity