NTSB Identification: MIA86FA239.
The docket is stored on NTSB microfiche number 31812.
Accident occurred Saturday, August 23, 1986 in VERO BEACH, FL
Aircraft: PIPER J3C-65, registration: N23266
Injuries: 2 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.

FLIGHT EXPERIENCED LOSS OF ENGINE POWER WHILE CLIMBING THROUGH 200 FEET SHORTLY AFTER TAKEOFF. WHILE ATTEMPTING TO RETURN TO THE RUNWAY THE AIRCRAFT COLLIDED WITH TREES AND THE GROUND COMING TO REST ADJACENT TO THE RUNWAY. EXAMINATION OF AIRCRAFT RECORDS REVEALED THE WRONG MODEL CARBURETOR FOR THE ENGINE WAS INSTALLED AND THAT THE ENGINE HAD BEEN OPERATING WITH A RICH MIXTURE DUE TO A CARBURETOR PROBLEM. WORK HAD BEEN PERFORMED ON THE CARBURETOR TO CORRECT THE RICH MIXTURE. EXAMINATION OF THE CARBURETOR AFTER THE ACCIDENT REVEALED THE MIXTURE CONTROL ARM WAS WIRED AT THE 40 TO 50 PERCENT OF TRAVEL FROM LEAN TO RICH AND THAT THE FUEL SHUTOFF NEEDLE VALVE WAS WORN EXCESSIVELY CAUSING THE NEEDLE VALVE TO NOT SEAT ON OCCASION. NO OTHER EVIDENCE OF ENGINE MALFUNCTION WAS FOUND.

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

FUEL SYSTEM,CARBURETOR..UNDETERMINED



Contributing Factors

FUEL SYSTEM,CARBURETOR..IMPROPER


Contributing Factors

MAINTENANCE,REPLACEMENT..IMPROPER..COMPANY MAINTENANCE PERSONNEL


Contributing Factors

FUEL SYSTEM,CARBURETOR..WORN

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