# SDR CALA2026022614094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2026
- Submitted: February 26, 2026
- Operation: Air carrier
- Aircraft: [N57439](https://openairdocs.org/aircraft/N57439), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33534
- Aircraft time: 52,618 hours, 18,767 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A5504
- 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/CALA2026022614094

## Discrepancy

MAIN CABIN LEFT AFT WET AREA FLOOR BEAM UPPER FLANGE CORRODED AROUND LAV MOUNT AT BS 947 LBL23.  ALL MAINTENANCE COMPLETED UP TO SFR INPUT.  PERFORMED PERMANENT REPAIR AT FLOOR BEAM UPPER FLANGE BS 947 IAW SRM 53-70-51-2R-5.

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