Runaway Yaw Trim

Gulfstream GVII

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Everything here is from the references shown below, with a few comments in an alternate color.

Last revision:


AFM Procedure

[AFM, §03-13-50]

Corrective Action


To view the FCS Synoptic Legend, refer to 03-13-190, FCS Synoptic Legend.

Corrective Action

  1. AP DISC / TSS (either sidestick) . . . PRESS and RELEASE
  2. NOTE

    The FLT CTRL RESET switch can be used to reduce rudder pedal control forces if caused by a runaway or stuck yaw trim knob. Pressing the FLT CTRL RESET switch with a stuck yaw trim knob will zero out any yaw trim previously applied, permanently disable the yaw trim knob, and result in the Yaw Trim Fail (U) (caution) CAS message.

  3. FLT CTRL RESET . . . PRESS and RELEASE (if required)

  4. Yaw Trim . . . Consider differential throttles

  5. Landing Controllability Check . . . Perform (if required)
    a. Refer to 03-13-10, Landing Controllability Check.

Gulfstream GVII-G500 Airplane Flight Manual, Revision 4, August 29, 2019

Gulfstream GVII-G500 Production Aircraft Systems, Revision 3, July 15, 2019