# SDR SWAA2025090504492

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2025
- Submitted: September 5, 2025
- Operation: Air carrier
- Aircraft: [N447WN](https://openairdocs.org/aircraft/N447WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33720
- Aircraft time: 70,511 hours, 42,001 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Zone 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/SWAA2025090504492

## Discrepancy

CORROSION ANGLE FLOOR STRUCTURE ON BS 706 AT LEVEL STR 18L AND LBL 64 AT PASSENGER CABIN.   REPLACED ANGLE FLOOR STRUCTURE ON BS 706 AT LEVEL STR 18L AND LBL 64 AT PASSENGER CABIN AND FASTENERS IAW SRM 51-40-02 AND DWG 144A7730 SHEET 7 REV-.

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