# SDR 2026FA0000422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2026
- Submitted: May 21, 2026
- Operation: General aviation
- Aircraft: [N62BV](https://openairdocs.org/aircraft/N62BV), registered now
- Make and model: Beech C24R
- Registry model: [Beech C24R](https://openairdocs.org/model/beech-c24r) (OpenAirDocs)
- Aircraft serial: MC649
- Aircraft time: 4,660 hours
- Engine: Lyc IO360A1B6
- Engine time: 4,660 hours
- Propeller: Mcauly B3D36C424
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Intake Valve
- Part number: SL136225
- Condition: Broken
- Location: Nr 4 Cylinder
- Part time: 28 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000422

## Discrepancy

DURING ENROUTE CRUISE FLIGHT NR 4 CYLINDER INTAKE VALVE STEM FAILED ALLOWING VALVE TO ENTER CYLINDER, DAMAGE PISTON AND SPARK PLUGS AND SUBSEQUENTLY SENT PIECES OF VALVE INTO NR 1 CYLINDER SMASHING SPARK PLUGS, PISTON AND RENDERING A VERY ROUGH ENGINE RUNNING ON 2 CYLINDERS. SUCCESSFUL EMERGENCY LANDING WAS PERFORMED TO AN AIRPORT WITH NO DAMAGE.  PRIOR THE OCCURRENCE ON MAY 11, 2026, THIS ENGINE HAD A PREVIOUS #3 CYLINDER INTAKE VALVE FAILURE IN FLIGHT.  TSO 15.1 HOURS.  INTAKE VALVE WAS NEW AT OVERHAUL.  THERE WAS NO DAMAGE TO THE AIRFRAME.

---
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.