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The aircraft was engaged on a charter flight to uplift five persons and the cabin seating was so arranged. When a sixth passenger was presented the pilot agreed to carry the extra person, seated on the floor of the aircraft and without a safety belt. A quantity of unsecured freight and baggage was also carried in the.rear of the cabin. Weather information passed to the aircraft en route warned of moderate to severe turbulence and the Perth Airport weather was 7/8 of cloud with a base of 500 feet and visibility down to 2,000 yards in rain. The flight proceeded normally to a position some 24 miles east of Perth, where an area of severe turbulence was encountered. The aircraft was in cloud at an altitude of 5, 000 feet and the pilot first used full power and a high nose attitude to counteract a sharp rate of descent. He then lowered the nose and reduced power to cope with a severe updraft. The effect of these manoeuvres and the resultant steep dive and recovery was that the unsecured passenger and freight forcibly contacted alternately the ceiling and the floor of the cabin slightly injuring the passenger and damaging some of the freight. This manoeuvre cycle was probably repeated before the aircraft eventually broke cloud with a ground clearance of 1,000 feet and the pilot regained control. During these manoeuvres the aircraft sustained extensive damage to the main spars and other major components. Instrument flight was then resumed and an instrument approach and a normal landing made at Perth Airport.
Download Final Report
[ Download PDF: 189KB]
 
 
 
 
General details
Date: 22 July 1970 Investigation status: Completed 
Time: 1718 WST Investigation type: Occurrence Investigation 
Location:Perth  
State: Western Australia  
Release date: 16 July 1971 Occurrence category: Accident 
Report status: Final Highest injury level: Minor 
 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 402 
Aircraft registration: VH-DIL 
Type of operation: Charter 
Damage to aircraft: Substantial 
Departure point:Southern Cross
Departure time:1600
Destination:Perth
 
 
 
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Last update 16 May 2014