Service difficulty report · Proximity Sensor · Boeing 737824

Difficulty date
September 13, 2021
Submitted
September 13, 2021
Operation
Air carrier
Aircraft
N14214
Make and model
Boeing 737824
Aircraft serial
28774
Aircraft time
71,560 hours, 25,636 cycles
Part
Proximity Sensor
Condition
Intermittent
Location
Le Flap Sys
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

FSEU FAULT HISTORY REPORTS LEADING EDGE FLAP RETRACT PROX SENSOR 2 INTERMITTENT DURING T/S, FOUND NO CURRENT FAULTS BUT FAULT HISTORY REPORTS FLAP RETRACT PROX SENSOR 2 INTERMITTENT. FOUND GROUNDING WIRE BROKEN. RETERMINATED GROUND WIRE, NO HELP. TRANSIT LIGHT REMAINS ON AFTER FULLY RETRACTED BUT GOES OUT WHEN "EXTENDED" LIGHT TURNS ON. REPLACED GROUNDING STUD FOR #2 FLAP PROX SENSOR GROUND PER SWPM 20-20-10.R&R #2 LE FLAP RETRACT PROX SENSOR PER AMM 27-88-11-000 -802. RESISTANCE CHECK OK.OPS CHECK GOOD. ALL INDICATIONS OK