# SDR JMXA2015020900002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2015
- Submitted: February 10, 2015
- Operation: Air carrier
- Aircraft: [N4126A](https://openairdocs.org/aircraft/N4126A), registered now
- Make and model: Robsin R44RAVENII
- Aircraft serial: 12096
- Aircraft time: 3,228 hours
- Engine: Lyc IO540AE1A5
- Engine time: 3,228 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Intake Valve
- Condition: Broken
- Location: Nr 5 Cylinder
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JMXA2015020900002

## Discrepancy

PARTIAL POWER LOSS & ENG ROUGHNESS REPORTED.  BROKEN INTAKE VLV FOUND ON NR 5 CYLINDER.

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