# SDR CALA2026032314727

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2026
- Submitted: March 23, 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: 147A5506
- 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/CALA2026032314727

## Discrepancy

MAIN CABIN LEFT AFT WET AREA BEAM UPPER FLANGE AS CORROSION AROUND HOLE AT BS986.5.  PEFORMED PERMANENT REPAIR AT MAIN CABIN AFT WET AREA FLOOR BEAM STA 986.5 LBL43 IAW B737-900ER SRM 53-70-51-2R-6 ALTERNATIVE 4 .    CAT A REPAIR, NO FURTHER INSPECTION REQUIRED.

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