# SDR SWAA2021080904591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2021
- Submitted: August 9, 2021
- Operation: Air carrier
- Aircraft: [N497WN](https://openairdocs.org/aircraft/N497WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32479
- Aircraft time: 56,774 hours, 33,557 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Condition: Failed
- Location: Lt Wing Te Flap
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021080904591

## Discrepancy

TRAILING EDGE FLAPS DID NOT MOVE. ALT FLAP EXTENSION REQUIRED. MAX BRAKING REQUIRED. PSEU ILLUMINATED AT GATE ; 8/8 SPOKE WITH CAPT AND HE SAID NOTICED A NEEDLE SPLIT AT CRUISE. FLAP WOULD NOT DEPLOY FOR LANDING. USED ALT EXTENSION METHOD TO FLAPS 15. L/E DEPLOYED NORMALLY AND FLAPS TO 15. MAX BRAKING REQUIRED / [01] FOUND F/C 27-53251<BR>T/S REF FIM 27-59-802 <BR>R&R #2 FLAP SKEW SENSOR REF AMM 27-59-01 <BR>OPS CHECK GOOD. NO FAULTS FOUND

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.