# SDR SWAA103780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2010
- Submitted: June 28, 2010
- Operation: Air carrier
- Aircraft: N618WN
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 28034
- Aircraft time: 48,957 hours, 40,046 cycles
- System (JASC): [2781 · Leading Edge Slat Position Indicating System](https://openairdocs.org/jasc/2781)
- Part: Proximity Switch
- Part number: F75935
- Condition: Faulty
- Location: Krueger Flap
- Stage of operation: CL
- 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/SWAA103780

## Discrepancy

AIR TURNBACK - AFTER TAKEOFF, AFTER FLAP RETRACTION, NR 4 FLAP INDICATION REMAINED "FULL EXTEND" UNABLE TO VISUALLY VERIFY.  REMOVED AND REPLACED NR 4 KRUEGER FLAP FULL EXTEND & FULL RETRACT PROX SWITCHES PER MM.

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