# SDR ASMF2020090710

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2020
- Submitted: September 7, 2020
- Operation: Air carrier
- Aircraft: [N950AM](https://openairdocs.org/aircraft/N950AM), registered now
- Make and model: Boeing 737852
- Aircraft serial: 35115
- Aircraft time: 53,048 hours, 20,286 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Proximity Sensor
- Condition: Malfunctioned
- Location: Te Flaps
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF2020090710

## Discrepancy

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.

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