Service difficulty report · Electronic Unit · Boeing 737924ER

Difficulty date
February 17, 2024
Submitted
February 20, 2024
Operation
Air carrier
Aircraft
N66831
Make and model
Boeing 737924ER
Aircraft serial
44562
Aircraft time
30,764 hours, 10,979 cycles
Part
Electronic Unit
Part number
285A12002
Part serial
D02729
Condition
Faulted
Location
Flaps
Part time
46,543 hours, 16,762 cycles
Stage of operation
DE
How discovered
O
Nature of condition
F
Precautionary procedure
B

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

What was found

FLAP 5 INDICATED WITH FLAP AT 15 RAN DISAGREE CHEKLIST LANDED FLAP 15 LOCKED DUE EMERGENCY DECLARED COMPLIED WITH FIM TASK 27-88 TASK 819. WIRING CHECKS COMPLIED WITH WITH NO FAULTS INDICATED AND FSEU REPLACED PRECAUTIONARY. UNLOCKING LOGPAGE ACCOMPLISHED FIM 27-88 TASK 819. ASYMMETRY TEST ALSO PASSED. ACCOMPLISHED OPS CHECK OF FLAP SLAT SYSTEM. OPS CHECK GOOD. ACP WIRING CHECKS FOR FIM 27-88 TASK 819. WIRING CHECKS WERE GOOD. NO DISCREPENCIES FOUND. TOMC STILL WANTS THE FSEU REPLACED. ORIGINAL BOX SHOWS NO EXISTING FAULTS ON FSEU.