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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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Quick Links

06/26/19

Message Overview:

Fault Message:

SLAT MOTOR/ SFCU/ WRG

Fault Code:

2750020STD

Associated CAS:

SLAT FAIL
(Caution)

SLAT FAULT
(Caution)

SLAT FLAP FAIL
(Caution)

SLAT FLAP FAULT
(Caution)

SLAT FLAP HALFSPD
(Advisory)

SLAT HALFSPD
(Advisory)

Reporting LRU: Slat/Flap Control Unit (SFCU)
System Description: 27-53-00
Schematic Diagram: 27-50-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-50-07 [ Global Express ]  [ G5000 ]  [ Global XRS ]
27-50-08 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Slat/Flap Control Unit (SFCU) is reporting failure of Slat Motor.

Possible Causes:

  • Slat Power Drive Unit (PDU) Motor 1 (B13)
  • Slat Power Drive Unit (PDU) Motor 2 (B14)
  • Left Slat Motor Brake
  • Right Slat Motor Brake
  • Slat/Flap Control Unit (SFCU) 1 (A124)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

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 ]
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 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

WARNING: Make sure that the PDU motors are cool. If the PDU motors were in operation, they can be hot and you can burn your hands.

  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. Swap SFCU 1 with SFCU 2.

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

  4. Move the SFCL to a different detent.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.
      NOTE: Left motor/brake assembly of the Slat PDU for fault received from SFCU 1. Right motor/brake assembly of the Slat PDU for fault received from SFCU 2.

  5. Swap the left and right slat motor brake assembly.

    1. If system checks are good, replace defective slat motor brake assembly and do close out.
    2. If fault remains, continue with next step.

  6. Perform wiring checks between the identified SFCU rack and Slat PDU Motor.

    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.

  7. Replace Slat PDU Motor.
  8. Do close out.

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