# SDR SWAA2026092833367

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2026
- Submitted: September 29, 2026
- Operation: Air carrier
- Aircraft: [N8643A](https://openairdocs.org/aircraft/N8643A), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 42524
- Aircraft time: 39,924 hours, 19,432 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Zone 100
- 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/SWAA2026092833367

## Discrepancy

FCB, AFT LOWER BULKHEAD SUPPORT AT BS 500I LBL 25 TO RBL25 HAS SEVERAL SPOTS OF CORROSION REMOVED AND REPLACED FCB AFT LOWER LH BULKHEAD SUPPORT BS 500I LBL 25 TO RBL25 IAW SRM 51-40-02 AND DWG# 143A9481 REV: - .

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