# SDR SWAA2021082596229

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2020
- Submitted: August 25, 2021
- Operation: Air carrier
- Aircraft: [N485WN](https://openairdocs.org/aircraft/N485WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32473
- Aircraft time: 55,044 hours, 32,732 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Bs 727-847
- 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/SWAA2021082596229

## Discrepancy

** CORROSION ** AFT CARGO COMPARTMENT FLOOR SIDE Z SUPPORT CHANNEL LBL 21 FROM STA 727 TO STA 847 WL 155 MKD DOT 60-036 / REMOVED CORROSION AT AFT CARGO COMPARTMENT Z CHANNEL FROM STA 727 TO STA 727D+15; ORIG. THICK .040; MAT. REMAINING .039; MAT LOSS .001 FOUND TO BE WITHIN LIMITS AS PER REF. B737 SRM 53-00-53-1A-2 AND SRM 51-10-02-0G-0. REMOVED CORROSION Z CHANNEL FROM STA 727D+15 TO STA 847. FOUND TO BE OUT OF LIMITS (EXFOLIATION CORROSION) AS PER REF. B737 SRM 51-10-02-0G-0; REPLACED Z CHANNEL FROM STA 727D+15 TO STA 847 L/H SLIDE. AS PER REF. B737 SRM 53-00-53-2R-5

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