Service difficulty report · Proximity Sensor · Boeing 737824

Difficulty date
September 11, 2025
Submitted
September 15, 2025
Operation
Air carrier
Aircraft
N78509
Make and model
Boeing 737824
Aircraft serial
31638
Aircraft time
55,778 hours, 20,135 cycles
Part
Proximity Sensor
Part number
189929
Condition
Faulted
Location
Le Flaps
Stage of operation
DE
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

LE FLAPS TRANSIT LIGHT CAME ON SELECTING FLAPS TO 30. FAULT CODES CHECKED. REMOVED AND REPLACED SLAT NR 1 INBD PROXIMITY SENSOR . ME 29-2762-3-0093 REF TASK 27-88 TASK 804, REMOVAL TASK 27-88-11-000-801, INSTALLED TASK 27-88-11-400-801. TYPE OF REPAIR (SPLICE, REPLACE, INSULATION, REPAIR, SHRINK TUBE, ETC.) 1) DO THIS TASK: PROTECTION OF THE EWIS DURING MAINTENANCE, TASK 20-60-07-913-801A. NORMAL OPERATION NOTED NO FAULTS.