Service difficulty report · Power Supply · Boeing 7878

Difficulty date
June 19, 2025
Submitted
June 23, 2025
Operation
Air carrier
Aircraft
N27901
Make and model
Boeing 7878
Aircraft serial
34821
Aircraft time
48,278 hours, 5,986 cycles
Part
Power Supply
Part number
C3805901
Part serial
612850001004
Condition
Faulted
Location
Brake Sys
Part time
48,262 hours, 5,984 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
B, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

BRAKES ADVISORY FAULT IS DETECTED IN THE BRAKE SYSTEM THAT REDUC ES BRAKING CAPABILITY BY TWO OR MORE BRAKES OR APPLIES AN UNCOM MANDED CLAMPING F ORCE TO ANY BRAKE WHILE ON THE GROUND. FIM TAS K REF: 31-90-F8-01A-421B-A CMC MSG# 3245904. WHEEL 8 ELECTRI C BRAKE ACTUATION CONTROLLER (TRANSCRIBE FROM LP 5263405 FOR VIS ABILITY ON ALL IT PLATFORMS) REF LOG 5265163 FOR ALL FAULTS CLEARED, BRAKE OPERATION NORMAL.

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