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Stabilizer Failure

G500 Abnormal Procedures

This is a work in progress


AFM Procedure

[AFM, §03-13-150]

Possible Cause

Horizontal stabilizer not responding to movement commands, or Stabilizer surface position information is unreliable or unavailable.

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System Impacts

  • Airplane longitudinal (pitch) control effectiveness may be restricted through the entire range of airspeeds of the flight envelope.

Corrective Action

  1. If a significant stick push force is required:

    1. Airspeed . . . Do not exceed 250 KCAS

  2. Trim Use primary trim switch or AP DISC / TSS

  3. Autopilot . . . OFF

  4. FLT CTRL RESET . . . PRESS and RELEASE

  5. If the CAS message is no longer displayed:

    1. Flight . . . Continue

  6. If the CAS message remains displayed after waiting 10 seconds:

    1. Airplane . . . Land as soon as practicable

    2. Autopilot . . . As required

    3. NOTE

      Use the horizontal stabilizer / elevator display on the FLIGHT CONTROLS synoptic page to determine an appropriate minimum speed and maximum flap deflection that will still allow adequate elevator control authority for flight and landing.

    4. Landing . . . Controllability Check Perform

    5. (1) Refer to 03-13-10, Landing Controllability Check.

    6. Approach and Landing

    7. (1) Approach . . . Use shallow approach angle

      NOTE

      Landing distance should be based on VREF+10 KCAS to touchdown increased by a 1.25 factor for a shallow approach.

      Wheel fuse plug release may occur due to added landing speed under combinations of high field elevation, landing weight and OAT.

      (2) Landing Distance . . . Recalculate with a 1.25 factor

      (3) Airspeed . . . VREF+10 KCAS (minimum)

      CAUTION

      USE CAUTION DURING FLARE, OR IN GUSTY WIND CONDITIONS, DUE TO DECREASED FLIGHT CONTROL AUTHORITY.

      (4) Touchdown . . . Minimize flare

References

Gulfstream GVII-G500 Airplane Flight Manual, Revision 1, August 31, 2018

Revision: 2019-04-18
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