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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:

FLAP MOTOR/ SFCU/WRG

Fault Code:

2750019STD

Associated CAS:

FLAP FAIL
(Caution)

FLAP FAULT
(Caution)

SLAT FLAP FAIL
(Caution)

SLAT FLAP FAULT
(Caution)

FLAP HALFSPD
(Advisory)

SLAT FLAP HALFSPD
(Advisory)

Reporting LRU: Flap Power Drive Unit (PDU) Motor
System Description: 27-52-00
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:

Flap Power Drive Unit (PDU) Motor fails to operate. Isolation of a failure to the Brake/wiring or Slat/Flap Control Unit (SFCU).

Possible Causes:

  • Flap Power Drive Unit (PDU) Motor 1 (B11)
  • Flap Power Drive Unit (PDU) Motor 2 (B12)
  • Left Flap Motor Brake
  • Right Flap Motor Brake
  • Slat/Flap Control Unit (SFCU) 1 (A124)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW 700-27-0373 - SFCU -17: “SLAT-FLAP HALFSPD” EICAS Nuisance Message

Forum Articles/Infoservice/Newsletter: None

When an open circuit condition is found between the SFCU and the Flap PDU motor/brake CAIMS message FLAP MOTOR/BRAKE/SFCU/WIRING will be included in the CAIMS active/stored message.

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 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 ]
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 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 Flap PDU for fault received from SFCU 1. Right motor/brake assembly of the Flap PDU for fault received from SFCU 2.

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

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

  6. Perform wiring checks between the identified SFCU rack and Flap 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 Flap PDU Motor.
  8. Do close out.

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