# SDR CALA2026011212875

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2026
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N54241](https://openairdocs.org/aircraft/N54241), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28953
- Aircraft time: 79,178 hours, 29,560 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A55048
- 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/CALA2026011212875

## Discrepancy

MAIN CABIN AFT WET AREA, FLOORBEAM HAS CORROSION ON UPPER SURFACE AT BS 947 APPROX RBL51.   REMOVED CORROSIN FROM FLOORBEAM UPPER SURFACE FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A AND UAL ECRA 5321-01330 REV A.   REPAIRED DAMAGE IAW SRM 53-70-51-2R, REPAIR 5, DETAIL B.

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