# SDR CALA2026011212877

- 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: 147A55068
- 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/CALA2026011212877

## Discrepancy

MAIN CABIN AFT WET AREA, FLOORBEAM HAS CORROSION ON UPPER SURFACE AT BS 986.5 BETWEEN LBL16 AND LBL45.  REPAIRED STA 986.5 FLOOR BEAM UPPER SURFACE FROM LBL50 TO RBL50 (FULL T-CAP REPLACEMENT) IAW B737 SRM 53-70-51-2R REPAIR #4 .

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