# SDR SWAA2017120718295

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2017
- Submitted: December 7, 2017
- Operation: Air carrier
- Aircraft: N790SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 30604
- Aircraft time: 60,418 hours, 35,277 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Part number: 90004212
- Part serial: 7169
- Condition: Faulty
- Location: Te Flap
- Stage of operation: UK
- 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/SWAA2017120718295

## Discrepancy

DECLARED EMERGENCY, TRAILING EDGE FLAP ASSEMBLY RIGHT INDICATES "UP", LEFT INDICATES LESS THAN "1" (APPROX 1/2).  R&R NR 3 FLAP SKEW DETECTION SENSOR IAW MM.

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