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The pilot hired the aircraft for a short flight to practise aerobatics as he intended to participate in a club aerobatic competition later in the day. The fuel quantity was checked by the pilot with a dipstick. There was a total of approximately 120 litres evenly distributed between the left and right wing tanks. The engine run up revealed no abnormalities prior to take off. The aircraft was climbed to 4000 feet in the training area where the pilot practised aerobatics for about five minutes. He then regained the height lost during the aerobatics before the aircraft was deliberately put into a spin. Recovery was effected at about 3000 feet. From 3000 feet the pilot closed the throttle and descended to circuit altitude. He said he cleared the engine on two occasions during the descent by opening the throttle briefly. The aircraft was positioned on a right downwind leg for runway 23 and normal cruise power set. During the before landing checks the pilot said the engine commenced to run roughly after the fuel boost pump was switched on. The pilot turned onto a base leg where the engine lost all power. As there was insufficient height for the aircraft to glide to the aerodrome the pilot attempted a forced landing in a confined area about 750 metres from the northern boundary. The aircraft struck the ground with a high rate of sink and low forward speed. The pilot suffered back injuries and required assistance to vacate the cockpit. An examination of the aircraft and an engine test run failed to reveal the reason for the loss of power. Witnesses reported the mixture control knob was approximately 25 millimetres out from the full rich position but it could not be determined if the mixture control was in this position prior to impact. There is no provision other than internal friction in the mixture control cable to prevent movement of the mixture control. The atmospheric conditions were not conducive to intake icing in a fuel injected engine.

Download Final Report
[ Download PDF: 23KB]
General details
Date: 15 July 1989 Investigation status: Completed 
Time: 1158  
Location:1 km N of Schofields Investigation type: Occurrence Investigation 
State: New South Wales  
Release date: 20 December 1989  
Report status: Final Occurrence category: Accident 
 Highest injury level: Serious 
Aircraft details
Aircraft manufacturer: Bellanca Aircraft Corp 
Aircraft model: 8 
Aircraft registration: VH-SSX 
Serial number: 455-78 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Schofields NSW
Departure time:1137
Destination:Schofields NSW
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