NTSB Identification: LAX86FVG02.
The docket is stored on NTSB microfiche number 31067.
Accident occurred Friday, March 21, 1986 in AFTON, CA
Aircraft: SIKORSKY S-55, registration: N8327
Injuries: 1 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT WAS LANDED OFF THE ARPT IN A FORCED LANDING AFTER A PWR LOSS. THE ACFT WAS DAMAGED IN THE HARD LANDING. ENG TEARDOWN SHOWED THE R/H MAGNETO MODEL S7LV-2 HAD STRIPPED DISTRIBUTOR DRIVE GEARS. NO OTHER ABNORMALITIES NOTED. THE TSO OF THE MAG WAS CALCULATED TO BE 669.2 HRS.

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

IGNITION SYSTEM,MAGNETO..FAILURE,TOTAL

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