# SDR AALA20101230TUL04

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2010
- Submitted: January 5, 2011
- Operation: Air carrier
- Aircraft: [N953AN](https://openairdocs.org/aircraft/N953AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29539
- Aircraft time: 29,950 hours, 12,557 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Condition: Out Of Position
- Location: Te Flap
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20101230TUL04

## Discrepancy

CREW REPORTED FLAP ASYMMETRY MESSAGE.  FLIGHT DIVERTED IAD LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  CLEANED AND ADJUSTED NUMBER 2 INBOARD SLAT PROXIMITY SENSOR THAT HAD FAULTED.  SYSTEM GROUND CHECK NORMAL OPERATION.

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