# SDR 2NVA202407090010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2024
- Submitted: July 11, 2024
- Operation: Air carrier
- Aircraft: [N328SS](https://openairdocs.org/aircraft/N328SS), registered now
- Make and model: Robsin R44
- Aircraft serial: 1214
- Aircraft time: 1,874 hours
- Engine: Lyc O540F1B5
- Engine time: 1,874 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Intake Valve
- Part number: 17A29467
- Condition: Failed
- Location: Nr 6 Cylinder
- Part time: 333 hours
- Component: Cylinder, Lyc
- Component part number: 05K21745
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2NVA202407090010

## Discrepancy

ABOUT 30 MINUTES INTO A TOUR, PILOT HEARD A SOUND AND EXPERIENCED LOSS OF POWER AND HIGH MANIFOLD PRESSURE. INITIATED POWER ON LANDING ON AN ADJACENT OPEN FIELD. VISUAL INSPECTION REVEALED OIL LEAK NEAR CYLINDER # 6. UPON REMOVAL OF VALVE COVER A BROKEN OFF VALVE STEM TIP WAS IDENTIFIED. NEW STYLE ROTATOR CUP INTAKE VALVE PN 17A29467 INSTALLED.

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