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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:

CRC Montreal (YUL)
Quick Links

07/01/19

Message Overview:

Fault Message:

EMS CDU 1 /EMS CDU 2/WRG

Fault Code:

2470205CDU

Associated CAS:

ELEC SYS FAULT
(Advisory)

Reporting LRU: Electrical Management System Control Display Unit (EMS CDU)
System Description: 24-70-00
Schematic Diagram: 24-70-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-70-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]
24-70-04 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

ARINC 429 communication between the Electrical Management System Control and Display Unit (EMS CDU) 1 and the EMS CDU 2 is faulty. The Line Replacement Unit (LRU) transmits on periodic basis a test label that is turned around by the receiving LRU.

Possible Causes:

  • Electrical Management System Control and Display Unit (EMS CDU) 1 (A94)
  • Electrical Management System Control and Display Unit (EMS CDU) 2 (A91)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Electrical Management System Control-and-Display Units (EMS CDU) AMM 24-70-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Electrical Management System Control-and-Display Units (EMS CDU) AMM 24-70-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform wiring checks between EMS CDU 1 and EMS CDU 2.

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

  2. Replace defective EMS CDU.
  3. Do close out.

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