20050417005829I

Incident

FAA incident report · Amrgen AA1C · Kearney, MO · April 17, 2005

Date: April 17, 2005 · 12:45 local
Place: Kearney, MO
Phase of flight: Normal Cruise
Operating rules: General operating rules (Part 91)
Aircraft: N39073
Reported as: Amrgen AA1C
Reported engine: Lycoming O235L2C
People aboard: 1
Fatal injuries: 0
Pilot’s flight hours: 836 total225 in this make and model9 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) Pilot states that he departed roosterville airport (0N0), liberty, Missouri, for a local "pleasure flight". While in cruise flight, at about 2100 feet MSL, the engine developed a problem which resulted in a continual decrease in engine RPM and power. An emergency landing was accomplished in a pasture with no damage to the aircraft, or injury to the pilot. The wings of the aircraft were removed and the aircraft was transported back to 0N0. Maintenance found that the #3 cylinder exhaust valve had broken, causing impact damage to the piston head and cylinder dome, eventually breaking off a portion of the intake valve head, prior to departing the cylinder. Incident privacy data omitted is closed with this report.

As the FAA filed it

(-23) PILOT STATES THAT HE DEPARTED ROOSTERVILLE AIRPORT (0N0), LIBERTY, MISSOURI, FOR A LOCAL "PLEASURE FLIGHT". WHILE IN CRUISE FLIGHT, AT ABOUT 2100 FEET MSL, THE ENGINE DEVELOPED A PROBLEM WHICH RESULTED IN A CONTINUAL DECREASE IN ENGINE RPM AND POWER. AN EMERGENCY LANDING WAS ACCOMPLISHED IN A PASTURE WITH NO DAMAGE TO THE AIRCRAFT, OR INJURY TO THE PILOT. THE WINGS OF THE AIRCRAFT WERE REMOVED AND THE AIRCRAFT WAS TRANSPORTED BACK TO 0N0. MAINTENANCE FOUND THAT THE #3 CYLINDER EXHAUST VALVE HAD BROKEN, CAUSING IMPACT DAMAGE TO THE PISTON HEAD AND CYLINDER DOME, EVENTUALLY BREAKING OFF A PORTION OF THE INTAKE VALVE HEAD, PRIOR TO DEPARTING THE CYLINDER. INCIDENT ^PRIVACY DATA ^ IS CLOSED WITH THIS REPORT.