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A ground witness heard the aircraft's engine power increase and observed the aircraft pull up, roll over and enter a spin to the right. He estimated the aircraft was about 3000 feet above the ground. The aircraft spun six to eight turns to the right and at about 600 feet above ground level the right spin ceased before the aircraft entered a spin to the left. The left spin stopped after about one turn and the aircraft appeared to be recovering from the dive when it hit the ground in a wings level, 45 degrees nosedown attitude. The pilot-in-command, who occupied the rear seat, held a low level aerobatic approval to operate down to 1000 feet above ground level. He had often spun the aircraft but is reported to have normally recovered after two turns. The other pilot who occupied the front seat, held an aerobatic endorsement but this was his first flight in a Zlin. It is not known which of the pilots was at the controls when the aircraft entered the right spin, however, the aircraft was normally commanded from the front cockpit. Injuries sustained by the pilot-in-command indicate that he was at the controls at the moment of ground impact. The normal technique prior to the entry of an intentional spin in the Zlin is to reduce power to idle. Considering the report that engine power was increased prior to the spin, it is possible that the spin entry was unintentional. It is the recommended practice in the Zlin to recover from a spin after two to three turns. Why the pilot(s) failed to recover from the right spin after two to three turns could not be determined. An examination of the wreckage and associated aircraft documentation did not reveal any fault that may have contributed to the accident. The prevailing weather was not considered a factor.

Download Final Report
[ Download PDF: 23KB]
General details
Date: 11 August 1990 Investigation status: Completed 
Time: 1345  
Location:Cardinia Investigation type: Occurrence Investigation 
State: Victoria Occurrence type: Loss of control 
Release date: 14 May 1991 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: Fatal 
Aircraft details
Aircraft manufacturer: Moravan Incorporated, Otrokovice 
Aircraft model: Z326 
Aircraft registration: VH-ILZ 
Serial number: 304 
Type of operation: Private 
Damage to aircraft: Destroyed 
Departure point:Moorabbin VIC
Departure time:1303
Destination:Moorabbin VIC
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