Originally Posted by
PPRuNe Towers
fgrieu I think is referring to the various reports of a very stiff trim wheel at higher airspeeds. I've plenty of experience of 737NG post maintenance hydraulic flight controls switched off for trim checks but never above 250 knots. I've even repeated the test with the corrections applied in the wrong sense - very unpleasant but trims wheel's still usable.
Rob
And probably never with the H-stab at or near the stops.