Originally Posted by
MechEngr
After how many uncommanded adverse trim inputs should a pilot assume that the trim system has failed?
Lets see...lets say an average of three per takeoff, and I've done maybe 5000 takeoffs, and watched another 5000, I guess that would mean at least 30,000, in my case. YMMV
As for the wheel trim, the Ethiopian crew tried it, and stated that it didn't work. We still don't know why.