Fault Message:

DISC FLAPS NOT 0 / FCU#2/SFCU#2/WRG

Fault Code:

2752251STD

Associated CAS:

SLAT FLAP BIT
(Advisory)

FLAPS/SLAT NOT ZERO discrete output from the Slat Flap Control Unit (SFCU) 2 is defective.

• Slat Flap Control Unit (SFCU) 2 (A95)
• Flight Control Unit (FCU) 2 (A66)
• Associated Wiring

Advisory Wire/Service Bulletin:

• AW700-45-0065 - CAIMS Nuisance Fault Messages

Forum Articles/Infoservice/Newsletter: None

The FCU provides a 28 V discrete signal to the SFCU. The SFCU grounds this signal when the flap system is in any position greater then 0.5 degrees. Performing a SLAT FLAP RESET on the EMS CDU may clear this fault.

NOTE: Wait at least one minute after SFCU reset to allow self test to run.

1. Swap SFCU 2 with SFCU 1.

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

2. Remove SFCU 2 and verify 28 VDC on connector A95AP1-94.

   1. If 28 VDC is found, repair defective wiring as required and do close out.
   2. If 28 VDC is not found, continue with next step.

3. Perform a wiring check on interface wire that follows:

   From	To	Result
   A95AP1-94	A66FP1-1

   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. Replace FCU 2 and reset FCUs latched faults.
5. Do close out.