# SDR SWAA2021072979868

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2020
- Submitted: July 29, 2021
- Operation: Air carrier
- Aircraft: [N477WN](https://openairdocs.org/aircraft/N477WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33988
- Aircraft time: 55,517 hours, 32,839 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Corroded
- Location: Bs 905-927 S1
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021072979868

## Discrepancy

***CORROSION*** ON FUSELAGE SKIN UNDER DORSAL FIN BS905 - BS927 STR1. WL 308 MARKED / REPAIRED CORROSION ON SKIN UNDER DORSAL FIN BS905- 927 STR1 WL308 IAW ER 20-02638 REV IR AND EA 20-153-00664 REV IR

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