NTSB Identification: CHI84LA046.
The docket is stored on NTSB microfiche number 25548.
Accident occurred Thursday, November 17, 1983 in NORTHFIELD, MN
Aircraft: PIPER PA-28-180, registration: N15255
Injuries: 1 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 PLT STATED THAT WHILE ENROUTE AT AN ALT OF 3000 FT MSL THE ENG FAILED. HE ALSO STATED THAT ALL ATTEMPTS TO RESTART THE ENG FAILED SO HE PROCEEDED TO MAKE AN EMERGENCY LANDING. INVESTIGATION REVEALED A MANUFACTURING DEFECT IN THE LEFT MAGNETO; THE BODY ASSEMBLY LEG DEMENSION WAS FOUND TO BE .610 THOUSANDTHS, THE REQUIRED LENGTH IS .750 THOUSANDTHS.

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

IGNITION SYSTEM,MAGNETO..DISINTEGRATED

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

ELECTRICAL SYSTEM..IMPROPER..MANUFACTURER

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