# SDR CALA2026010712734

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2025
- Submitted: January 7, 2026
- Operation: Air carrier
- Aircraft: [N37287](https://openairdocs.org/aircraft/N37287), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31636
- Aircraft time: 66,324 hours, 24,763 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 141A5504
- Condition: Corroded
- Location: Zone 200
- 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/CALA2026010712734

## Discrepancy

MAIN CABIN STA 328, FLOORBEAM UPPER SURFACE CORRODED AT APPROX RBL 54.  REMOVED DAMAGE, ORIG THICKNESS .130, REMOVED .038, REMAINING .092 FOUND TO BE OUT OF LIMITS IAW SRM 53-10-51-1A-1. REPAIRED DAMAGED SECTION OF FLOORBEAM IAW SRM 53-10-51-2R-7.

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