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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

07/05/19

Message Overview:

Fault Message:

FCU #1/ INTERNAL BUS FAULT [FCMA]

Fault Code:

27657161SX

Associated CAS:

SPLRS STAB BIT
(Advisory)

Reporting LRU: Flight Control Unit (FCU) 1
System Description: 27-60-00
Schematic Diagram: 27-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-60-05 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Internal failure causing loss of redundancy data but depends on bus affected. May cause Flight Control Unit (FCU) 1 Channel A invalid.

Possible Causes:

  • Flight-Control Unit (FCU) 1 (A65)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

No immediate effect on FCU operation.

Quick Links:

Removal of the Flight-Control Units AMM 27-61-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Flight-Control Units AMM 27-61-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to System Diagnostics AMM 45-45-00-970-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

NOTE: you have another CAIMS fault related to FCU, perform this troubleshooting first.

  1. Access the system diagnostic and run FCU INTERFACE TEST from LRU test menu.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  2. Replace FCU 1 and confirm that they are installed properly and securely.
  3. Do close out.

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