# SDR SWAA2026020562928

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2026
- Submitted: February 5, 2026
- Operation: Air carrier
- Aircraft: [N947WN](https://openairdocs.org/aircraft/N947WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36924
- Aircraft time: 50,403 hours, 30,825 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sidewall 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/SWAA2026020562928

## Discrepancy

CORROSION FOUND ON THE FWD CARGO BAY FLOOR TO SIDE WAL SUPPORT, BS 460 - 500D, LBL 22, WL 155.   REMOVED CORROSION ON THE SIDEWALL SUPPORT BS 460 MEASUREMENT: L 1.9,  W  0.9, & BS 500A, L 1.7, W 1.2,  MAT. LOSS 0.025'.  REMAINING THICKNESS 0.015'.  FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2, FIG. 103, DETAIL C.  MATERIAL LOSS IS MORE THAN 10 PERCENT. REMOVED & REPLACED THE FLOOR TO SIDEWALL SUPPORT BS 396 - 500D, LBL 24, IAW SRM 51-40-02 AND DWG 143A7500, REV -.

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