NTSB Identification: ATL91LA045.
The docket is stored on NTSB microfiche number 44253.
Accident occurred Wednesday, January 23, 1991 in WARM SPRINGS, GA
Probable Cause Approval Date: 03/31/1993
Aircraft: CESSNA 182A, registration: N4718D
Injuries: 1 Uninjured.

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

ACCORDING TO THE PILOT, DURING THE ENGINE RUNUP, THE RIGHT MAG DROP WAS SIGNIFICANT. WITH THE MAG SWITCH BACK ON BOTH, IT WAS OK. AGAIN ON THE RIGHT MAG THE ENGINE BACKFIRED & QUIT. IT WAS STARTED AGAIN WITH THE SAME RPM DROP ON THE RIGHT MAG. PUFFS OF SMOKE WERE OBSERVED FROM UNDER THE ENGINE. HE GOT OUT, OPENED THE COWLING, & SAW FLAMES. THE LOCAL FD PUT OUT THE FIRE. AN FAA INSPECTOR FOUND THAT THE FIRE INITIATED FROM THE ALTERNATOR. THE INSTRUMENT PANEL WAS ALSO BURNED BUT NOT THE INTERIOR SIDE OF THE FIREWALL. A SHORT APPEARED TO HAVE OCCURRED AT THE TOP OF THE INSTRUMENT PANEL.

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

AN ELECTRICAL SHORT RELATED TO THE ALTERNATOR FROM AN UNDETERMINED SOURCE.

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