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ERJ 135/145 noses up sharply when disengaging autopilot

Luis Canas

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Please comment on how to prevent the ERJ 135/145 (in fact, other airplanes as well) from a sudden and sharp nose up when on final ILS approach to a runway (autopilot and approach buttons on, manual speed control and descend rate) as I disengage the autopilot at 500-1000 ft. I have also experienced this behavior when cruising high up on autopilot and turning off AP to fly manually.

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  • 2 weeks later...

You mean, trimmed up too much? The trim indicator on EICAS shows Down, 0 in green display. There is a trim down button on the joystick, but does it work if you are on AP and APR? Also, I have hands off the joystick when deactivating AP (so it would be centered). As far as I know, the joystick is calibrated (else would I be able to manually maneuver the aircraft properly, like when taxiing) but I wonder if the aileron lag or sensitivity should be adjusted.

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