MALIBU, CA, USA
N8094F
PIPER PA-28RT-201T
THE ENG SEIZED APPROXIMATELY 3500 FT & THE ACFT WAS DITCHED OFF THE BEACH. THE RIGHT MAG DISTRIBUTOR BLOCK SHOWED EVIDENCE OF CARBON TRACKING & CROSS FIRING. NEITHER END OF THE RIGHT MAG HAD BREATHER PLUGS INSTALLED. ALL SPARK PLUGS WERE EXCESSIVELY FOULED & SEVERELY ERODED. SPRINGS ON THE SPARK PLUGS LEADS WERE BURNED & DIRTY. THE #1 CONROD WAS SPLITLENGTHWISE & WAS IN SEVERAL PIECES. EXAMINATION OF THE LOG BOOK SHOWED IMPROPER MAINTENANCE PRACTICES SUCH AS OVERHAULING A CYLINDER & INSTALLING DETERGENT TYPE OIL. NO EVIDENCE OF COMPLIANCE WITH TELEDYNE SERVICE BULLETIN #612 COULD BE FOUND. THIS BULLETIN RECOMMENDS PERIODIC MAINTENANCE PROCEDURES TO ESTABLISH CLEANING & INSPECTION GUIDELINES GOVERNING BENDIX MAGNETOS & IGNITION HARNESSES.
Source: NTSB Aviation Accident Database
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