Service difficulty report · Proximity Sensor · Boeing 737824

Difficulty date
April 10, 2025
Submitted
April 14, 2025
Operation
Air carrier
Aircraft
N11206
Make and model
Boeing 737824
Aircraft serial
30578
Aircraft time
76,434 hours, 28,421 cycles
Part
Proximity Sensor
Part number
189929
Condition
Faulty
Location
Flap System
Stage of operation
AP
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

LE FLAP TRANSIT LGT IN FLIGHT FLAPS UP. LE 1 SHOWS EXENDED WITH FLAPS UP. PERFORMED BITE TEST FOR FLAP AND SLAT BOX REF AMM 27-51 TASK801. AND FOUND FAULT. ADD PIC INSTALLED R-Y-B SPLICES FOR SENSOR S169. REF WDM 27-81-11-901. FOUND SENSOR S169 FAULTY WHILE TROUBLESHOOTING PER F.I.M 27-88 TASK 806. REMOVED AND REPLACED SENSOR REF A.M.M 27-88-11-400-802. OPS CHECK GOOD