# SDR SWAA2019071834991

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2019
- Submitted: July 19, 2019
- Operation: Air carrier
- Aircraft: [N489WN](https://openairdocs.org/aircraft/N489WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33855
- Aircraft time: 51,878 hours, 30,692 cycles
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Control Valve
- Part number: 4163DA
- Part serial: 6148
- Condition: Faulty
- Location: Flap/Slat
- 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/SWAA2019071834991

## Discrepancy

AIR TURNBACK, DURING CLIMBOUT WE NOTICED WE HAD A LE FLAPS TRANSIT LIGHT ILLUMINATED. THIS APPEAR PANEL LEADING EDGE DEVICE INDICATOR SHOWED SLATS 3,4,5,6 AMBER IN DISAGREEMENT TO FLAP POSITION. WE RAN APPROPRIATE QRH AND RETURNED TO DEPARTURE AIRPORT.  R&R LEADING EDGE FLAP AND SLAT CONTROL VALVE IAW AMM.

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