NTSB Identification: CHI83FA387.
The docket is stored on NTSB microfiche number 23405.
Accident occurred Saturday, August 20, 1983 in WAUKEGAN, IL
Aircraft: AEROTEK PITTS S-2A, registration: N80016
Injuries: 2 Fatal.
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.
WHILE ON A LOCAL FLT, THE ACFT CRASHED IN LAKE MICHIGAN ABOUT 1/2 MI FROM THE SHORELINE. ACCORDING TO WITNESSES, IT WAS FLYING OVER THE WATER AT ABOUT 100 FT, THEN PULLED ALMOST STRAIGHT UP TO ABOUT 300 FT ABOVE THE WATER, NOSED OVER & WENT ALMOST STRAIGHT NOSE DOWN UNTIL WATER IMPACT. LATER, THE ACFT WAS RECOVERED & EXAMINED, BUT NO PREIMPACT/MECHANICAL MALFUNCTION OR FAILURE WAS FOUND. THE LEADING EDGE OF THE PROPELLER BLADE TIPS WERE BENT OPPOSITE THE DIRECTION OF ROTATION, THE SPARK PLUGS WERE CLEAN & FUEL WAS FOUND IN THE FUEL DISTRIBUTION MANIFOLD.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND
AEROBATICS..PERFORMED..PILOT IN COMMAND
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