Service difficulty report · Proximity Sensor · Boeing 737824

Difficulty date
October 27, 2025
Submitted
October 31, 2025
Operation
Air carrier
Aircraft
N14231
Make and model
Boeing 737824
Aircraft serial
28795
Aircraft time
80,647 hours, 30,153 cycles
Part
Proximity Sensor
Part number
189929
Condition
Faulted
Location
Zone 700
Stage of operation
AP
How discovered
O
Nature of condition
N
Precautionary procedure
L

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

What was found

REF. LP 6754459, NLG FAILED TO RETRACT ON GO AROUND COULD HEAR DRAG OF GEAR. FAULT CODES 32-61003, 32-61010, 32-64004 PRESENT ON PSEU BITE. PERFORMED PSEU BITE PER FIM 32-09 TASK 801, NO EXISTING FAULTS FOUND, FAULT HISTORY SHOWED (NOSE LKD A FAULT-32-61003, INTRMTNT AND NOSE LKD B FAULT 32-61020). TS PER FIM 32-61 TASK 804. REF WDM 32-64-11-1, RESISTANCE CK, INDUCTANCE FROM PSEU CONNECTOR AS PERCAUTION, REPLACED NLG LKD A (S846) AND NLG LKD (S854) PER AMM 32-61-41-000-801, 400-801. CLEARANCE MEASUREMENT TEST PERFORMED PER AMM 32-61-41-220-801, CLEARANCE EITHIN ACCEPTABLE EFFECTIVE RANGE. BITE CK PSEU PER FIM 32-08 T 801, NO FAULTS D10982 PIN 9, 31 OHMS, PIN 2 348 OHMS IN TOLLERANCE PER PARA F. 5) -F, AND 6) -F). REF WDM 32-64-12-1 (SWITCH S854) CONNECTOR D10984 PIN 9; 31 OHMS, PIN 2 344 OHMS. WITHIN LIMITS PER F. 5) -F, PARA 6) -G). DISPLAYED. PERFORMED NOSE GEAR EXTENSION AND RETRACTION TEST GEAR PER AMM TASK 32-33-00-710-801. CYCLED NLG AT LEAST 10 TIMES WITH NO FAULTS. ALL WITHIN TIME LIMITS. PSEU SHOWS NO FAULTS. NO ACTUATOR LEAKS OR HYDRAULIC LEAKS NOTED.