# Incident 20000323040219I: Cessna 172S, Ruston, LA, March 23, 2000

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: March 23, 2000, 13:00 local time
- Place: Ruston, LA
- Airport: Ruston Municipal Airport
- Phase of flight: Takeoff Ground Roll
- Operating rules: General operating rules (Part 91)
- Operator: GP8S
- Location: 32.5132° N, 92.5884° W: Placed by OpenAirDocs at RUSTON RGNL (RSN), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.5132&lon=-92.5884&mi=10
- Aircraft: N434SP, registered now (https://openairdocs.org/aircraft/N434SP) (OpenAirDocs)
- Registry model: Cessna 172S (registry code 2072439, https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Registry engine: Lycoming I0360 series (registry code 41515, https://openairdocs.org/engine/lycoming-i0360-series) (OpenAirDocs)
- Reported make and model: CESSNA 172S
- Reported engine: LYC IO360L2A
- Fatal injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20000323040219I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) ON MARCH 23, 2001, AT 1300 CST, CESSNA 172S, N434SP, EXPERIENCED AN ABNORMAL IDLE MIXTURE RPM INCREASE DURING PRE-TAKEOFF CHECKS. THE AIRCRAFT IS OWNED BY LA. TECH UNIVERSITY.  THE PILOT STATED THAT DURING THE PRE-TAKEOFF CHECK, THE ENGINE IDLE SPEED INDICATED 650 RPM AT THE HARD IDLE STOP POSITION, AND THE IDLE/MIXTURE LEANING CHECK RESULTED IN AN INCREASE OF 150 RPMS. DUE TO THE 150 RPM INCREASE, THE PILOT ABORTED TAKEOFF.  ACCORDING TO THE LYCOMING IO-360 SERIES IDLE SPEED AND MIXTURE CHECK, AN INCREASE OF MORE THAN 50 RPM WHILE LEANING OUT THE MIXTURE INDICATES AN EXCESSIVE RICH IDLE MIXTURE.  DUE TO THE ADDITIONAL OCCURRENCES (N980SP--FTW01LA062 AND N566SP--FTW01SL088) INVOLVING A RICH MIXTURE SETTING WITH THE LYC. IO-360 ENGINE, THE FUEL DISTRIBUTION SYSTEM WAS REMOVED FOR FURTHER EXAMINATION.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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