# SDR SWAA2021071579203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2020
- Submitted: July 15, 2021
- Operation: Air carrier
- Aircraft: [N258WN](https://openairdocs.org/aircraft/N258WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32516
- Aircraft time: 47,529 hours, 28,263 cycles
- System (JASC): [5540 · Rudder Structure](https://openairdocs.org/jasc/5540)
- Part: Mount
- Condition: Corroded
- Location: Rudder
- 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/SWAA2021071579203

## Discrepancy

RUDDER BALANCE WEIGHT MOUNTING SURFACE HAS EXCESSIVE CORROSION. / REMOVED + REPLACED RUDDER ASSEMBLY PER AMM 27-21-11; ALL OPS CHECK GOOD. SEE ALSO SA-M 326 AND NRC D417671. P/N OFF/ON 173A0103-8 S/N OFF SB1932 S/N ON SB0974

---
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.