Fault Message:

FLT CONT 1A FAULT [FCU 1]

Fault Code:

27654291SX

Associated CAS:

CONFIG SPOILERS
(Warning)

FLT SPLR DEPLOYED
(Caution)

FLT SPOILERS FAIL
(Caution)

GND LIFT DUMP
(Caution)

MACH TRIM FAIL
(Caution)

ROLL SPOILERS FAIL
(Caution)

RUD LIMITER FAIL
(Caution)

SPLR LEVER FAIL
(Caution)

STAB TRIM
(Caution)

FLT SPOILERS FAULT
(Advisory)

PITCH FEEL FAULT
(Advisory)

RUD LIMITER FAULT
(Advisory)

SPLRS STAB BIT
(Advisory)

STAB CH1 FAIL
(Advisory)

CPLT ROLL SPLRS
(Status)

GLD MANUAL ARM
(Status)

PLT ROLL SPLRS
(Status)

STAB CH1 OFF
(Status)

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 ]

There is a problem with the Flight Control Unit (FCU) 1 or the related interface wiring.

• Flight Control Unit (FCU) 1 (A65)
• Associated Wiring

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

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.

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 ]
Self-Test (SPOST) of the Flight-Control Units	AMM 27-61-05-740-801 [ 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 ]

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 1 with FCU 2.

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

3. Perform wiring checks between the following contacts:

   From	To	Result
   A65AP1-1H	A65AP1-15D
   A65AP1-2H	A65AP1-15C
   A65AP1-1D	A65AP1-5B
   A65AP1-1C	A65AP1-5A
   A65AP1-3K	A65AP1-8J
   A65AP1-2D	A65AP1-5D

   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. Perform a NVM download of both FCUs and send the download data to ac.yul@aero.bombardier.com.
5. Do close out.