NTSB Identification: CHI83LA273.
The docket is stored on NTSB microfiche number 21498.
Accident occurred Saturday, June 18, 1983 in FRASER, MI
Aircraft: CESSNA 172, registration: N8430E
Injuries: 2 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ENG LOST POWER ON TAKEOFF & THE ACFT STRUCK TREES AS THE PLT WAS ATTEMPTING TO RETURN TO THE APRT. THE CENTER ELECTRODES OF THE SPARK PLUGS WERE WORN & COVERED WITH CARBON. NONE OF THE PLUGS WOULD FIRE ABOVE 55 PSI WHEN PUT IN A CHAMPION FIRE TESTOR. ALSO, NONE OF THE PLUGS PASSED THE CHAMPION MASSIVE ELECTRODE WEAR GAUGE.

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

IGNITION SYSTEM,SPARK PLUG..WORN

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

MAINTENANCE..INADEQUATE..OTHER MAINTENANCE PERSONNEL

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