# SDR KISA202602050001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 25, 2025
- Submitted: February 5, 2026
- Operation: Air carrier
- Aircraft: [N86VS](https://openairdocs.org/aircraft/N86VS), registered now
- Make and model: Cessna 414
- Registry model: [Cessna 414](https://openairdocs.org/model/cessna-414) (OpenAirDocs)
- Aircraft serial: 0955
- Aircraft time: 7,633 hours, 2,544 cycles
- Engine: Cont TSIO520NB
- Engine time: 114 hours, 23 cycles
- Propeller: Hartzl PHCC3YF1
- System (JASC): [5534 · Vertical Stabilizer Miscellaneous Structure](https://openairdocs.org/jasc/5534)
- Part: Angle
- Part number: AND101332002
- Condition: Corroded
- Location: Zone 300
- Part time: 7,633 hours, 2,544 cycles
- 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/KISA202602050001

## Discrepancy

DURING A PREFLIGHT WALK AROUND CORROSION WAS OBSERVED ON THE AFT SPAR ANGLE CHANNEL OF THE VERTICAL STABILIZER. UPON FURTHER INVESTIGATION SIGNIFICANT INTERGRANULAR CORROSION WAS FOUND RESULTING IN EXFOLIATION OF THE SURFACE OT THE SPAR ANGLE. THIS RESULTED IN A MAJOR REPAIR. AIRCRAFT WAS REMOVED FROM SERVICE

---
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.