# Incident 20021229037489I: Amrgen AA1B, Tonganoxie, KS, December 29, 2002

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: December 29, 2002, 11:15 local time
- Place: Tonganoxie, KS
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Location: 39.1046° N, 95.0783° W: Placed by OpenAirDocs: center of Tonganoxie, KS, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.1046&lon=-95.0783&mi=10
- Aircraft: N6518L, registered now (https://openairdocs.org/aircraft/N6518L) (OpenAirDocs)
- Registry model: Grumman American Avn. AA-1B (registry code 3960103, https://openairdocs.org/model/grumman-american-avn-aa-1b) (OpenAirDocs)
- Registry engine: Lycoming 0-235 series (registry code 41505, https://openairdocs.org/engine/lycoming-0-235-series) (OpenAirDocs)
- Reported make and model: AMRGEN AA1B
- Reported engine: LYC O235C2C
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 625 total, 250 in this make and model, 45 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20021229037489I

## Narrative

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

(-23) ON DECEMBER 29, 2002, AIRCRAFT DEPARTED CLAY COUNTY REGIONAL AIRPORT (GPH), MOSBY, MISSOURI, ENROUTE TO JABARA AIRPORT (AAO), WICHITA, KANSAS. PILOT REPORTED THAT APPROXIMATELY 35 MINUTES AFTER DEPARTURE FROM GPH HE NOTICED A ZERO INDICATION ON THE OIL PRESSURE GAUGE WITH THE ENGINE "RUNNING SMOOTH". PILOT BELIEVED THAT THE GAUGE WAS "FAULTY", BUT MADE A DECISION TO INITIATE AN EMERGENCY LANDING AT LAWRENCE MUNICIPAL AIRPORT (LWC), LAWRENCE, KANSAS. SHORTLY AFTER THE DECISION TO LAND AT LWC, THE ENGINE BEGAN TO "LOSE POWER" AND AN OFF AIRPORT SITE WAS SELECTED. AS THE AIRCRAFT SLOWED TO 90 MPH THE ENGINE "QUIT" AND A POWER OFF LANDING WAS ACCOMPLISHED IN A FIELD APPROXIMATELY 4 MILES NORTHEAST OF TONGANOXIE, KANSAS. THERE WAS NO DAMAGE TO AIRCRAFT OR PROPERTY, AND THE PILOT AND PASSENGER WERE NOT INJURED. THE LOWER FUSELAGE SKIN, AFT OF THE ENGINE COWL, EXHIBITED OIL TRAILS ORIGINATING FROM THE ENGINE OIL BREATHER. ENGINE INSPECTION BY PRECISION ENGINE, OWENSBORO, KENTUCKY, REVEALED BROKEN PISTON RINGS IN EACH OF THE FOUR ENGINE CYLINDERS. THIS INCIDENT, ^PRIVACY DATA OMITTED^ IS CONSIDERED CLOSED.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.