# SDR CALA2018050201218

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2018
- Submitted: May 2, 2018
- Operation: Air carrier
- Aircraft: [N21723](https://openairdocs.org/aircraft/N21723), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28790
- Aircraft time: 62,234 hours, 21,018 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 141A5504
- Condition: Corroded
- Location: Fuselage
- 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/CALA2018050201218

## Discrepancy

MAIN CABIN FLOORBEAM HAS CORROSION AT STA 328 RBL 25. SPLICED IN NEW SECTION OF FLOORBEAM UPPER CHORD FROM RBL 1 TO RBL 41 PER ECRA 5315-01098.

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