Service difficulty report · Sensor · Boeing 737924

Difficulty date
December 28, 2025
Submitted
December 30, 2025
Operation
Air carrier
Aircraft
N31412
Make and model
Boeing 737924
Aircraft serial
30129
Aircraft time
65,503 hours, 27,187 cycles
Part
Sensor
Part number
90004213
Part serial
25042
Condition
Faulted
Location
Flap Sys
Part time
66,956 hours, 28,148 cycles
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

FLAP ASYM ON UPWIND 3.5/ 5. NO ABNORMAL ROLLING O R OUT OF TRIM CONDITIONS OBSERVED BITE FSEU BOX FOUND FAULT CODE FOR SKEW NR 3, RESET FSEU AND SKEW IND BREAKERS TO UNLOCK FLAPS FROM THE FROZEN POSITION , AFTER BREAKER RESET FLAP INDICATION READING NORMAL AT THIS TIME IAW FIM 27-59 TASK 803. REMOVED NR 3 FLAP SCEW SENSOR IAW AMM 27-59-01-000-803. FOUND PINS BENT AND ELECTRICAL CONNECTOR, CORRODED WITH CRACKS IN CONNECTOR. REPLACED CONNECTOR D11818 FOR FLAP SKEW SENSOR 3 IAW SWPM 20-61-11. INSTALLED FLAP SCEW SENSOR NR 3 IAW AMM 27-59-01-400-803. OPS CHECK GOOD SKEW SENSOR 3 READS IN RANGE STOWED AND AT 15 AND 40 DEGREES. FSEU READS NO FAULTS. OK TO CONTINUE.