# SDR SWAA2026040978520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2026
- Submitted: April 9, 2026
- Operation: Air carrier
- Aircraft: [N8631A](https://openairdocs.org/aircraft/N8631A), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 42385
- Aircraft time: 39,753 hours, 19,327 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Intercostal
- Condition: Corroded
- Location: Zn 200
- 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/SWAA2026040978520

## Discrepancy

CORROSION ON INTERCOSTAL BS312+5 RBL31; WL208<[01] REMOVED AND REPLACED INTERCOSTAL BS312-328 RBL31; WL208 I.A.W SRM 51-40-02-0G-0 AND DWG 141A5400 REV: -.;[02] VERIFIED CORRECTIVE ACTION

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