# SDR CALA2025110410863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 2025
- Submitted: November 4, 2025
- Operation: Air carrier
- Aircraft: [N27519](https://openairdocs.org/aircraft/N27519), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43459
- Aircraft time: 15,881 hours, 5,327 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Part number: 143A5410206
- Condition: Cracked
- 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/CALA2025110410863

## Discrepancy

CABIN FLOOR STRUCTURE WEB UPPER ANGLE CRACKED BL 0 STA 500C AND 500D.  REMOVED CABIN FLOOR ANGLE CRACKED AS PER SRM 51-40-02-0G ,FABRICATED LOCATED AND DRILLED NEW ANGLE IAW ENGINNERING INFORMATION COMPONENT PART AND DWG # 143A5400 SH 263.   INSTALLED NEW ANGLE AS PER SRM 51-40-02-0G-G AND DWG #143A5400.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.