SANDY HOOK BEAC, NJ, USA
N6879B
PIPER PA-18-150
THE PILOT REPORTED THAT WHILE HE WAS TOWING A BANNER, THE ENGINE RPM BEGAN TO DECREASE. HE INITIATED EMERGENCY PROCEDURES, BUT COULD NOT RESTORE THE POWER. THE PLANE WAS MANEUVERED FOR A FORCED LANDING ON A BEACH. THE PLANE CRASHED ON THE BEACH WHILE THE PILOT WAS TURNING TO AVOID PEOPLE AND DRIFTWOOD. DURING AN INVESTIGATION, THE NO. 3 CYLINDER HAD NO COMPRESSION WHEN IT WAS CHECKED. SIGNIFICANT LEAD DEPOSITS WERE FOUND ON THE STEM OF THE NO. 3 EXHAUST VALVE AND ON ITS VALVE SEAT. THE FACE OF THE VALVE WAS MAKING CONTACT WITH ONLY ABOUT 60 PERCENT OF THE SEAT.
Source: NTSB Aviation Accident Database
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