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Before the flight and in the presence of the only passenger, the pilot of the Chieftain asked the pilot of the Cessna whether he had been "dumped" yet. The Cessna pilot did not know what was meant by the term and his colleague would not elaborate. The Cessna departed, followed by the Chieftain about one minute later. The flight planned heights for each aircraft for entry into the Mackay Control Zone were 3000 feet (Cessna) and 2500 feet (Chieftain). The pilot of the Chieftain reported that he climbed to 3000 feet outside controlled airspace, maintaining visual contact with the other aircraft and pointing it out to the passenger, who occupied the front right seat of the aircraft. The Chieftain was closing with the Cessna at a rate of about 20 knots when the pilot lost sight of the other aircraft. Impact occurred when the Chieftain struck the Cessna from above, the right wing tip of the Chieftain striking the right aileron of the Cessna. At about the same time, the right tailplane of the Chieftain struck the fin and rudder of the Cessna. As the Chieftain continued its passage over the other aircraft its tailcone contacted the outboard leading edge of the right wing of the Cessna. Both aircraft remained flyable and landed at the nearest aerodrome. Neither pilot declared an emergency. Later, the pilot of the Chieftain said that he meant to overfly the Cessna and descend ahead of it to give the other pilot "a big scare" as part of his initiation into bush flying.

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[ Download PDF: 23KB]
General details
Date: 25 April 1990 Investigation status: Completed 
Time: 725  
Location:Over Blacksmith Island Investigation type: Occurrence Investigation 
State: Queensland Occurrence type: Airborne collision 
Release date: 18 July 1990 Occurrence class: Airspace 
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft 1 details
Aircraft manufacturer: Piper Aircraft Corp 
Aircraft model: PA-31 
Aircraft registration: VH-NDU 
Serial number: 31-8152083 
Type of operation: Charter 
Damage to aircraft: Substantial 
Departure point:Hamilton Island QLD
Departure time:0716
Destination:Mackay QLD
Aircraft 2 details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 210 
Aircraft registration: VH-MDU 
Serial number: 21061634 
Type of operation: Aerial Work 
Damage to aircraft: Substantial 
Departure point:Hamilton Island QLD
Departure time:715
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