Flight Control Surface in Electrical Backup Mode
This is a work in progress
One or more of the EBHAs has reverted to electrical-backup mode due to hydraulic or REU failure.
DISPLAYED CAS AND CA MESSAGES: FCS Actuator EB Mode (U) (caution)
NON-DISPLAYED CA: FCS No Dispatch (caution) and FCS No Dispatch (advisory)
Indicated Flight Control Surface: Operating in electrical-backup mode with operating time constraints if normal operation is not restored.
To view the FCS Synoptic Legend, refer to 03-13-190, FCS Synoptic Legend.
- If the CAS message is associated with a hydraulic failure that occurred within 2 hours of takeoff:
- If the CAS message is not associated with a hydraulic failure:
IF THE HYDRAULIC FAILURE OCCURS WITHIN 2 HOURS OF TAKEOFF, THE AIRPLANE MUST LAND WITHIN 4 HOURS TO PREVENT POSSIBLE FAILURE OF A FLIGHT CONTROL SURFACE.
a. Airspeed . . . 285 KCAS / 0.90M maximum
b. Airplane . . . Land at nearest suitable airport
a. Autopilot . . . As required
b. FCS BATTERIES . . . Monitor condition
c. FCS Synoptic . . . Check
d. Verify aircraft response to control inputs of affected control surface.
e. If the aircraft does not respond to control inputs:
(1) Refer to:
Gulfstream GVII-G500 Airplane Flight Manual, Revision 1, August 31, 2018