# SDR CALA2025121011980

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2025
- Submitted: December 10, 2025
- Operation: Air carrier
- Aircraft: [N33286](https://openairdocs.org/aircraft/N33286), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31600
- Aircraft time: 65,903 hours, 24,597 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 143A5410170
- Condition: Cracked
- Location: Sta500-520
- 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/CALA2025121011980

## Discrepancy

CABIN FLOOR SUPPORT,BS 500I - 520, BL 0 STABILIZER ASSY UPPER ANGLE CRACKED.   REMOVED AND REPLACED IAW SRM 51-40-02-0G-0 AND DWG 143A5400.

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