NTSB Identification: MIA84FU007.
The docket is stored on NTSB microfiche number 21943.
Accident occurred Saturday, November 12, 1983 in MIAMI, FL
Aircraft: WIZARD J3, registration: NONE
Injuries: 1 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.
SEVERAL WITNESSES OBSERVED THE ULTRALIGHT VEHICLE FLYING IN A SOUTHWESTERLY DIRECTION AT ABOUT 1500 FT AGL. THEY REPORTED THAT THE PLT HAD EXECUTED 5 OR 6 STALL MANEUVERS, FOLLOWED BY NORMAL STRAIGHT AHEAD RECOVERIES. DURING THE LAST STALL, THE ACFT WAS OBSERVED IN A STEEPER THAN NORMAL CLIMB ANGLE, THEN FELL OFF AT THE TOP OF THE MANEUVER & ENTER A DIVE IN A SLIGHTLY INVERTED ATTITUDE. MOMENTS LATER, THE WINGS FOLDED & THE ULTRALIGHT CRASHED. AN INVESTIGATION REVEALED THAT THE UPPER KING POST HAD COLLAPSED. THERE WAS EVIDENCE THE FAILURE OCCURRED WHEN NEGATIVE AERODYNAMIC LOADS WERE ENCOUNTERED.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND
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