NTSB Identification: NYC82FHM07
14 CFR Part 91: General Aviation
Accident occurred Sunday, June 20, 1982 in SANDY HOOK BEAC, NJ
Probable Cause Approval Date: 06/20/1983
Aircraft: PIPER PA-18-150, registration: N6879B
Injuries: 1 Serious.
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 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.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ENGINE ASSEMBLY,VALVE,INTAKE..OTHER
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ENGINE ASSEMBLY,VALVE,INTAKE..MOVEMENT RESTRICTED
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