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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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08/15/19

Message Overview:

Fault Message:

SFCU #2 FAULT

Fault Code:

2752064STD

Associated CAS:

FLAP FAIL
(Caution)

FLAP FAULT
(Caution)

SLAT FAIL
(Caution)

SLAT FAULT
(Caution)

SLAT FLAP FAIL
(Caution)

SLAT FLAP FAULT
(Caution)

FLAP HALFSPD
(Advisory)

SLAT HALFSPD
(Advisory)

SLAT FLAP HALFSPD
(Advisory)

Reporting LRU: Slat Flap Control Unit (SFCU) 2
System Description: 27-51-00
Schematic Diagram: 27-50-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-50-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Slat Flap Control Unit (SFCU) 2 is reporting it has an internal failure to CAIMS.

Possible Causes:

  • Slat/Flap Control Unit (SFCU) 2 (A95)
  • Left Slat Resolver (MT77)
  • Right Slat Resolver (MT78)
  • Left Flap Resolver (MT67)
  • Right Flap Resolver (MT72)
  • Slat Power Drive Unit (PDU) 2 (B14)
  • Flap Power Drive Unit (PDU) 2 (B12)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

This fault could be a nuisance. Disregard this message if the fault is active with no CAS message or was recorded in the CAIMS history without any related CAS message.

The following are a few things that can be done to clear this CAIMS fault:

  • Performing a slat flap reset on the EMS CDU
  • Moving the Slat Flap Control lever to another detent

NOTE: The SFCU INTERNAL FAULT can be caused by an intermittent Flap or Slat Resolver. To avoid unnecessary replacement of the SFCUs, make sure to check CAIMS active or stored faults for any resolver related messages and prioritize those messages first.

Quick Links:

Clear Slat/Flap Control Unit (SFCU) Latched Faults AMM 27-51-05-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Slat/Flap Control Unit (SFCU) AMM 27-51-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Slat/Flap Control Unit (SFCU) AMM 27-51-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Electronic Rigging of the Slat/Flap Control Unit (SFCU) AMM 27-51-05-820-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Flap Power-Drive Unit (PDU) AMM 27-52-37-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Flap Power-Drive Unit (PDU) AMM 27-52-37-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Flap Power-Drive Unit (PDU) Motors AMM 27-52-41-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Flap Power-Drive Unit (PDU) Motors AMM 27-52-41-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Flap Resolvers AMM 27-52-49-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Flap Resolvers AMM 27-52-49-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Slat Power-Drive Unit (PDU) AMM 27-53-33-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Slat Power-Drive Unit (PDU) AMM 27-53-33-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Slat Power-Drive Unit (PDU) Motors AMM 27-53-37-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Slat Power-Drive Unit (PDU) Motors AMM 27-53-37-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Slat Resolvers AMM 27-53-41-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Slat Resolvers AMM 27-53-41-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Stored Faults AMM 45-45-00-970-803 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

NOTE: If this CAS message is posted during power-up and swapping SFCU does not fix the fault

  1. On the EMS CDU, select CTRL function and SLAT/FLAP RESET.
    NOTE: Wait at least one minute after SFCU reset to allow self-test to run.
  2. Cycle the flaps from IN/0 degrees to OUT/30 degrees.

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

  3. Access CAIMS Active or Stored faults. Are there any other CAIMS messages related to FLAP or SLAT resolvers?

    1. If a FLAP Resolver related CAIMS message was recorded, go to step 7.
    2. If a SLAP Resolver related CAIMS message was recorded, go to step 9.
    3. If there is no related fault message, continue with next step.

  4. Swap SFCU 2 with SFCU 1.
    NOTE: To avoid the display of any Slat/Flap related CAS nuisance message after replacement of SFCU due to internal failure, follow AW 700-27-0373 instructions.

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

  5. Execute two consecutive Slats and Flaps electrical rigging using CAIMS.(All EICAS messages and CAIMS Active faults related to the Slat Flap Control System must be disregarded throughout the dual electrical CAIMS rigging process). Once the two CAIMS SFCS rigging are completed, perform a complete aircraft power shut down.
  6. Apply power to the aircraft. Is the fault still present?

    1. If YES, go to step 11.
    2. If NO, do close out.

  7. Access the FLAP resolver and perform wiring checks between the resolver and SFCU 2.

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

  8. Replace the FLAP Resolver and do close out.

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

  9. Access the SLAT Resolver and perform wiring checks between the resolver and SFCU 2.

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

  10. Replace the SLAT Resolver.

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

  11. Perform wiring checks between SFCU 2 and PDU motor 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.

  12. Replace PDU 2.
  13. Do close out.

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