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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

04/27/20

Message Overview:

Fault Message:

HIGH POWER RELAY

Fault Code:

231000ASC

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:

The Satellite Data Unit (SDU) detects an issue with the High Powered Relay (HPR).

Possible Causes:

  • Satellite Data Unit (SDU) (A228)

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

NOTE: The High Power Relay (HPR) is only used in a dual MCS system where a High Gain Antenna (HGA) and a Low Gain Antenna (LGA) are installed. The HPR connects the High Power Amplifier (HPA) to either the HGA or LGA. This configuration is not supported on the Global Express, G5000 or XRS. This CAIMS fault should not be posted on the A/C.

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 ]

Troubleshooting Recommendations:

  1. Remove and replace the Satellite Data Unit.
  2. Do close out.

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