# SDR 2NVA202311010001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2023
- Submitted: November 1, 2023
- Operation: Air carrier
- Aircraft: [N328SS](https://openairdocs.org/aircraft/N328SS), registered now
- Make and model: Robsin R44
- Aircraft serial: 1214
- Aircraft time: 1,470 hours
- Engine: Lyc O540F1B5
- Engine time: 1,470 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Intake Valve
- Part number: 17A29467
- Condition: Damaged
- Location: Engine
- Part time: 1,470 hours
- Stage of operation: CL
- How discovered: V
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2NVA202311010001

## Discrepancy

PILOT IDENTIFIED HIGH MANIFOLD PRESSURE REQUIRED AFTER TAKE OFF AND PERFORMED A PRE CAUTIONARY LANDING OFF AIRPORT. INSPECTION REVEALED A WET SPARK PLUG ON CYLINDER # 6. AFTER REMOVAL OF THE VALVE COVER, A BROKEN INTAKE VALVE TIP WAS DISCOVERED. NEW STYLE ROTATOR CAP INTAKE VALVES ARE INSTALLED PER LYCOMING SI1280D.

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