# SDR SWAA2021080581064

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2020
- Submitted: August 5, 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): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Bs 727-847
- 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/SWAA2021080581064

## Discrepancy

***CORROSION*** ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT B.S. 727-847; L.B.L. 21; W.L. 154. / CORROSION ON SUPPORT P/N 146A7502-1 FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY OF FASTENER HOLES IAW SRM 53-00-53-1A-2 FIG 103 DETAIL D; REMOVED AND REPLACED AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT BS 727-847; LBL 21; WL 154 IAW DWG 146A7500

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