# SDR 99ZZZX4261

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Embry Riddle Aeronautical University Inc, repair station BF8R032O](https://openairdocs.org/faa-repair-station/BF8R032O/embry-riddle-aeronautical-university-inc.md) (OpenAirDocs)
- Aircraft: [N475ER](https://openairdocs.org/aircraft/N475ER), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280670
- Engine: Lyc IO360L2A
- System (JASC): [8500 · Engine (Reciprocating)](https://openairdocs.org/jasc/8500)
- Part: Engine
- Condition: Malfunctioned
- Location: Forward
- Part time: 1,047 hours
- Stage of operation: CR
- Nature of condition: E, R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4261

## Discrepancy

DURING NORMAL CRUISE, CREW EXPERIENCED MOMENTARY ENGINE ROUGHNESS.  THE ENGINE WAS THOROUGHLY INSPECTED AND NO SUSPECT ITEMS WERE FOUND.

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