WHILE CONDUCTING WHAT WITNESSES DESCRIBED AS AEROBATIC MANEUVERS, THE AIRCRAFT ENTERED UNCONTROLLED FLIGHT AND COLLIDED WITH THE GROUND. INVESTIGATION REVEALED THAT THE WEIGHT AND BALANCE LIMITS WERE EXCEEDED. THE MANUFACTURER REPORTED THAT AFT C.G. RESULTED IN DETERIORATED STALL SPIN RECOVERY. AFT C.G. WAS EXCEEDED BY A MINIMUM OF .5 INCHES.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
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