# SDR SWAA2021072020180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2020
- Submitted: July 20, 2021
- Operation: Air carrier
- Aircraft: [N426WN](https://openairdocs.org/aircraft/N426WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29830
- Aircraft time: 61,080 hours, 36,269 cycles
- System (JASC): [5340 · Fuselage Main, Attach Fittings](https://openairdocs.org/jasc/5340)
- Part: Attach Angle
- Condition: Corroded
- Location: Bs 312-328
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021072020180

## Discrepancy

CORROSION ON MOPSILL THRESHOLD ATTACH ANGLE BS 312-328 LBL53 WL 208 / REMOVED MOPSILL THRESHOLD ATTACH ANGLE PER SRM 51-40-02-0G-0. INSTALLED NEW MOPSILL THRESHOLD ATTACH ANGLE PER SRM 51-40-02-0G-0 AND DWG 141A8110.

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