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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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04/27/20

Message Overview:

Fault Message:

DATA LINK UNIT/WIRING/SDU

Fault Code:

2310033SC

Associated CAS:

None

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

Fault Description:

The communication interface between the Airborne Data Link Unit (ADLU) and the Satellite Data Unit (SDU) has been detected as faulty.

Possible Causes:

  • Satellite Data Unit (SDU) (A228)
  • 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

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 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. Disconnect Datalink Unit connector A239AP1 and SDU connector A228BP1. Perform a wiring check as follows:

    From To Result
    A239AP1-A15 Ground
    A239AP1-B15 Ground
    A239AP1-C15 Ground
    A239AP1-D15 Ground
    A239AP1-A15 A239AP1-B15
    A239AP1-C15 A239AP1-D15

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

  2. Perform a wiring check as follows:

    From To Result
    A239AP1-A15 A228BP1-G1
    A239AP1-B15 A228BP1-H1
    A239AP1-C15 A228BP1-J1
    A239AP1-D15 A228BP1-K1

    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.

  3. Replace the ADLU. Is the fault still present?

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

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

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