# SDR SWAA2019031230540

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2019
- Submitted: March 12, 2019
- Operation: Air carrier
- Aircraft: [N7739A](https://openairdocs.org/aircraft/N7739A), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 35110
- Aircraft time: 42,481 hours, 22,162 cycles
- System (JASC): [2781 · Leading Edge Slat Position Indicating System](https://openairdocs.org/jasc/2781)
- Part: Sensor
- Part number: BAC27DCT614
- Condition: Faulty
- Location: Le Slat
- Stage of operation: AP
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2019031230540

## Discrepancy

DECLARED EMERGENCY, LEADING EDGE FLAPS TRANSIT INDICATION ON APPROACH.  R&R S172 LEADING EDGE FLAP 3 RETRACT SENSOR PER AMM.

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