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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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Quick Links

06/13/19

Message Overview:

Fault Message:

HIGH GAIN ANTENNA UNIT/WIRING

Fault Code:

231001ASC

Associated CAS:

None

Reporting LRU: High Gain Antenna (HGA)
System Description: 23-13-00
Schematic Diagram: 23-13-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 23-13-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The High Gain Antenna (HGA) in the Satellite Communication (SATCOM) system does not operate correctly.

Possible Causes:

  • Antenna Control Unit (ACU) (A227)
  • High Gain Antenna (HGA) (E57)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Tail - Mounted High Gain Antenna AMM 23-13-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Tail - Mounted High Gain Antenna AMM 23-13-13-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Antenna Control Unit AMM 23-13-21-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Antenna Control Unit AMM 23-13-21-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform wiring checks between ACU (A227P2) and HGA (E57P1).

    1. If the wiring checks are not good, repair the defective wiring and do close out.
    2. If the wiring checks are good, continue with next step.

  2. Replace HGA.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Replace ACU.
  4. Do close out.

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