# SDR SWAA100422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2010
- Submitted: January 26, 2010
- Operation: Air carrier
- Aircraft: N742SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29278
- Aircraft time: 40,539 hours, 23,924 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Part number: S256A4042
- Part serial: 1531
- Condition: Faulty
- Location: Te Flap
- 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/SWAA100422

## Discrepancy

DIVERSION - ON APPROACH TO MDW TRIED TO EXTEND FLAPS, FOR LANDING INDICATOR SHOWED SPLIT FLAPS AND WOULD NOT MOVE, RT STUCK AT 0 AND LT INDICATOR BETWEEN 1 AND 0.  LANDED USING ALT FLAP METHOD.  REMOVED AND REPLACED NR 4 FLAP SKEW SENSOR PER MM.

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