# SDR CALA2025101009896

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2025
- Submitted: October 10, 2025
- Operation: Air carrier
- Aircraft: [N75436](https://openairdocs.org/aircraft/N75436), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33531
- Aircraft time: 50,986 hours, 18,232 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A550423
- 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/CALA2025101009896

## Discrepancy

MAIN CABIN AFT WET AREA,CORROSION AROUND SCREW HOLES ON FLOORBEAM AT STA 947.5,BETWEEN LBL-10 AND RBL-10.  ACCOMPLISHED REPAIR AT STA 947.5 FLOOR BEAM IN REF WITH B737 -900 ER SRM 53-00-51-2R-1, AAR ESR 20-12933 AND ECRA 5370-01199, PENDING ESFR ENTRY, NO DIP REQUIRED.

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