# SDR AALA202112134345

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 9, 2021
- Submitted: December 13, 2021
- Operation: Air carrier
- Aircraft: [N815NN](https://openairdocs.org/aircraft/N815NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33208
- Aircraft time: 35,434 hours, 14,365 cycles
- System (JASC): [2781 · Leading Edge Slat Position Indicating System](https://openairdocs.org/jasc/2781)
- Part: Sensor
- Condition: Faulty
- Location: Rt Wing
- Stage of operation: CL
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202112134345

## Discrepancy

AIRCRAFT WAS GROUNDED: CLIMBING THROUGH 15,000 FT, LE IN TRANSIT LIGHT ILLUMINATED WITH RH INBOARD SLAT ON OVERHEAD PANEL; FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED LE FLAP EXTENDED SENSOR S173 IAW AMM 27-88-11, OPS CHECK GOOD.

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