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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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For AOG assistance contact:

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Quick Links

06/22/21

Message Overview:

Message Name:

SAT NOCOMM ON FMS CDU

Message Code: 232OBS004
Effectivity: All
System: Airborne Data Link System
System Description: 23-23-00
Schematic Diagram: 23-23-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 23-23-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

SATCOM ARINC 429 Broadcast Data not received by Airborne Data Link Unit (ADLU). Set when no data is received for 1 minute and cleared when data is received.

Possible Causes:

  • Airborne Data Link Unit (ADLU) (A239)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

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

AW 700-23-0756 - MCS-7000 Obsolescence

AW700-45-0065 - CAIMS Nuisance Fault Messages

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

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

Forum Articles/Infoservice/Newsletter: None

NOTE: This fault can be seen if SATCOM is not logged on to a satellite, which could happen when the aircraft is in the hangar. Make sure the aircraft is out of hangar before proceeding with further troubleshooting steps.

If no SATCOM is installed, disregard the fault code.

Quick Links:

Operational Test of the Data Link System AMM 23-23-00-710-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Airborne Data-Link Unit AMM 23-23-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Airborne Data-Link Unit AMM 23-23-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform the operational test of the SATCOM system. Is the operational test of the SATCOM system satisfactory?

    1. If NO, troubleshoot and fix the SATCOM system as required and continue with next step.
    2. If YES, continue with next step.

  2. Operate the Airborne Data-Link System using SATCOM network to receive the terminal text weather information.
    NOTE: Do the initialization of the Flight Management System.
  3. Is the NEW message advisory shown on FMS CDU and new message received?

    1. If YES, verify that CAIMS fault code 2320009TDY 'ADLU SATCOM FAULT' is not displayed on PMAT and do close out.
    2. If NO, continue with next step.

  4. Perform a continuity check, short to ground and pin/socket retention check between the ADLU connector (A239AP1) and the SDU connector (A228BP1). Is the wiring continuity between short to ground and pin/socket retention check between ADLU and SDU satisfactory?

    1. If NO, repair or replace the defective wiring as required as per WM 20-12 and do close out.
    2. If YES, continue with next step.
      NOTE: ADLU does not receive ARINC broadcast data, when SATCOM/SDU is operational.

  5. Replace the Airborne Data-Link Unit (ADLU).
  6. Do close out.

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