Service difficulty report · Proximity Switch · Boeing 737924ER

Difficulty date
January 2, 2025
Submitted
January 6, 2025
Operation
Air carrier
Aircraft
N69840
Make and model
Boeing 737924ER
Aircraft serial
42181
Aircraft time
31,392 hours, 11,445 cycles
Part
Proximity Switch
Part number
285A16006
Part serial
F05913
Condition
Faulted
Location
Zone 200
Part time
31,377 hours, 11,439 cycles
Stage of operation
NR
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

PSEU LIGHT ON AFTER LANDING BUT EXTINGUISHED DURING TAXI TO THE GATE FAULT R OW SW DISAGREE 52-72022. RIGHT AFT DOOR DISAGREE PLACED ON MEL 5203R COMPLIED WITH MEL. TOMC APPROVED. VERIFIED THAT ASSOCIATED FLIGHT LOCK IS OPERATING NORMALLY REF MEL 5203R MEL APPLIED PERFORMED PSEU BITE REF FIM 32-09 TASK 801, NO ACTIVE FAULTS. FOUND FWD DOOR ENTRY SWITCH IN FAULT HISTORY ON FLT LEG 0, AND RH OW EMERGENCY DOOR SWITCH FAULTING IN PREVIOUS LEGS. SUSPECT BAD PSEU. CHECK RH OW EMERGENCY EXIT DOOR AND FWD ENTRY DOOR SWITCHES FOR PROPER RIGGING, NO DEFECTS NOTED. INPUT/OUTPUT MONITORING SHOWED SWITCHES WORKING PROPERLY REMOVED/REPLACED PSEU REF AMM 32-09-10. PERFORMED OPS CHECK REF AMM 32-09-10-710-801. OPS CHECK GOOD, TEST PASS. PERFORMED PSEU BITE REF AMM 32-09-10-740-801, NO FAULTS FOUND.