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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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04/28/20

Message Overview:

Fault Message:

HI PWR AMP OVER TEMP WARNING

Fault Code:

23100C7SC

Associated CAS:

None

Reporting LRU: Satellite Data Unit (SDU)
System Description: 23-13-00
Schematic Diagram: 23-13-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 23-13-09 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Over temperature warning in High Gain Antenna (HGA) High Power Amplifier (HPA).

Possible Causes:

  • Satellite Data Unit (SDU) (A228)
  • High Power Amplifier (HPA) (A229)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

AW 700-23-0584 - Honeywell SDU-600 Obsolescence

AW 700-23-0756 - MCS-7000 Obsolescence

SB 700-23-001 - Modification MCS-6000 SATCOM

SB 700-23-043 - Modification MCS-7000 SATCOM

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Satellite Data Unit AMM 23-13-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Satellite Data Unit AMM 23-13-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the High Power Amplifier AMM 23-13-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the High Power Amplifier AMM 23-13-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Remove power from the HPA. Allow enough for the unit to cool down to ambient temperature. Is the fault message still present?

    1. If YES, go to step 3.
    2. If NO, continue with next step.

  2. Apply power back to the HPA and operate to test. Is the fault message still present?

    1. If NO, do close out.
    2. If YES, continue with next step.

  3. Remove and replace the HPA. Is the fault still present?

    1. If NO, do close out.
    2. If YES, continue with next step.

  4. Replace the SDU.
  5. Do close out.

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