Aviation safety investigations & reports

De Havilland DH84, VH-AQU, 10 Km East of Beachport SA, 17 November 1984

Investigation number:
Status: Completed
Investigation completed


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After refuelling, the pilot found one of the tanks contaminated with water. The fuel was drained from the tank and clean fuel added. No contamination was found in the subsequent check of the fuel in the tank. The aircraft was then washed using a high pressure water hose. During the following flight, the engines began to run roughly and the pilot decided to carry out a landing in a paddock. The surface of the paddock was rough and the aircraft bounced heavily and groundlooped, collapsing the right gear. The investigation revealed that water had been present in the fuel system for sometime. Because of the design of the fuel system it is not possible to drain the lowest point of the fuel tank while the aircraft is parked. It is probable that the engine rough running was caused by a combination of contaminated fuel and a sticking valve.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 17 November 1984   Investigation status: Completed  
Time: 840    
Location: 10 Km East of Beachport    
State: South Australia    
Release date: 19 June 1985   Occurrence category: Accident  
Report status: Final   Highest injury level: Minor  

Aircraft details

Aircraft details
Aircraft manufacturer de Havilland Aircraft Pty Ltd  
Aircraft model DH-84  
Aircraft registration VH-AQU  
Type of operation Aerial Work  
Damage to aircraft Substantial  
Departure point Strathalbyn SA  
Departure time 0840  
Destination Portland VIC  
Last update 01 April 2011