# SDR SWAA2021052768244

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2021
- Submitted: May 27, 2021
- Operation: Air carrier
- Aircraft: N747SA
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29799
- Aircraft time: 74,617 hours, 44,264 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Bs 727-767
- 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/SWAA2021052768244

## Discrepancy

**CORROSION** FOUND SEVERAL SPOTS OF SURFACE CORROSION AT AFT CARGO COMPT ON ZEE CHANNEL RBL 21. BETWEEN STA 727+4 THROUGH 767. / REMOVED CORROSION ON ZEE CHANNEL. FOUND OUT OF LIMITS AS PER B737-700 SRM 51-10-02-0G-0. FABRICATED NEW ZEE CHANNEL AS PER B737-700 SRM 51-40-05-0G-0 AND DWG #146A7502.

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