NTSB Identification: LAX07CA146.
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Accident occurred Monday, April 30, 2007 in Perris, CA
Probable Cause Approval Date: 07/25/2007
Aircraft: Cessna 177RG, registration: N177R
Injuries: 1 Minor.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The aircraft collided with trees during a forced landing following a loss of engine power. Approximately 12 nautical miles into the flight, the engine abruptly lost power. The pilot decided that he would attempt to land at a nearby airport but did not have sufficient altitude and the airplane landed 2.51 nautical miles short of the runway. During the engine examination, investigators noted that the cap and harness assembly of the single drive duel magneto was separated from the magneto. Closer examination revealed significant fretting signatures where the cap is seated against the housing of the magneto and was supposed to have been secured by four screws. There were no screws observed or found. There were no impact energy damage signatures on the cap, magneto, ignition harness, or firewall. The pilot stated that he was the last person to have the harness off the magneto.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

a loss of engine power while in cruise flight due to an improperly installed magneto housing by the owner/pilot.

Full narrative available

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