Service difficulty report · Proximity Sensor · Boeing 737852

Difficulty date
July 13, 2020
Submitted
September 7, 2020
Operation
Air carrier
Aircraft
N950AM
Make and model
Boeing 737852
Aircraft serial
35115
Aircraft time
53,048 hours, 20,286 cycles
Part
Proximity Sensor
Condition
Malfunctioned
Location
Te Flaps
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

CAPTAIN REPORTED THAT DURING APPROACH FLAP POSITION INDICATOR HAS NEEDLE SPLIT, AFTER 2 MINUTES IT TURNED TO A TRAILING EDGE FLAP LEVER DISAGREE CONDITION. MAINTENANCE PERSONNEL PERFORMED THE BITE TO FSEU IAW FIM 27-51 TASK 801 PROCEDURE, DETECTING FAILURE CODES 275 040 03 AND 275 081 00. THE PROXIMITY SENSORS NUMBERS S1005 AND S1002 WITH P/N 1-899-29. WERE REPLACED IAW AMM 27-88-11, TESTED CORRECT.