Originally Posted by
Speed of Sound
Thanks for that. The ball nut seems to be transferring the load from the jack screw threads to the attachment point of the ‘ball nut’.
Watching it made me wonder whether there may be a lubrication solution to the problem.
NOPE NOPE NOPE
Basic AERO LOAD issue. Since NG uses ( except for mcas ) the same hardware and trim system and has fore a few decades, the solution has zip to do with lube.