# SDR SWAA2022032547882

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 2019
- Submitted: May 16, 2022
- Operation: Air carrier
- Aircraft: [N8621A](https://openairdocs.org/aircraft/N8621A), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36917
- Aircraft time: 21,611 hours, 9,427 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Channel
- Condition: Corroded
- Location: Aft Cargo Compt
- 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/SWAA2022032547882

## Discrepancy

***CORROSION*** AFT CARGO PIT Z CHANNEL L/H SIDE FROM BS 807 TO BS 727F LBL 25 WL 156 HAS CORROSION / AFTER EVALUATION OF CORROSION DAMAGE ON THE AFT CARGO L/H 'Z' CHANNEL STA 727F TO 847 LBL 25 WL 156 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2. REMOVED DAMAGED SECTION OF 'Z' CHANNEL AND INSTALLED REPAIR PARTS FROM STA 727F TO 847 LBL 25 WL 156 IAW SRM 53-00-53-2R-5; SRM 57-40-02-0G-0; DWG 146A7500 AND DWG 146A7502.

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