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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

06/27/19

Message Overview:

Fault Message:

FLT CONT 1B FAULT [FCU 2]

Fault Code:

27654262SX

Associated CAS:

SPLRS STAB BIT
(Advisory)

SPLRS STAB IN TEST
(Advisory)

Reporting LRU: Flight Control Unit (FCU) 2
System Description: 27-60-00
Schematic Diagram: 27-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-60-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Internal failure of Flight Control Module 1B reported by Flight Control Unit (FCU) 2.

Possible Causes:

  • Flight Control Unit (FCU) 2 (A66)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

If no CAS message after "SPOILER/STAB IN TEST" on the EICAS (hydraulic system 1-2-3 pressurized) disregard the message.This fault could be related to a real issue with the flight control system but not related to a faulty flight control unit. The flight control unit command and monitoring lane within each channel are sometime not able to confirm a fault at the same time related to the flight control system. In this condition a single or many CAS messages will be posted and require troubleshooting.This fault may sometime be cleared by performing the flight control system reset procedure. If the fault clears, swap FCU positions.

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 ]
Access to Non-Volatile Memory (NVM) Management AMM 45-45-00-970-822 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform a self-test of FCU to confirm that the fault remains the same.

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

  2. Swap FCU 2 with FCU 1 and reset FCUs latched faults.

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

  3. Perform wiring checks between FCU 1 and FCU 2 as follow:

    From To Result
    A66DP1-1D A65DP1-10J
    A66DP1-1E A65DP1-10K
    A66DP1-10H A65DP1-10G
    A66DP1-15B A65DP1-15A

    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.

  4. Do an NVM download of both FCUs and send the download data to AC.YUL@aero.bombardier.com.
  5. Do close out.

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