Aviation safety investigations & reports

Loss of control Meta Sokol L40, VH-DUT, Mundubbera Qld, 5 October 1969

Investigation number:
Status: Completed
Investigation completed


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While cruising in level flight the engine, without warning, commenced to vibrate severely. Engine instrumentation remained normal and a magneto check was satisfactory. The vibration increased rapidly to such a degree that the pilot had no alternative but to close the throttle fully and carry out a forced landing. The aircraft was over very rough terrain and the only field available was 1,580 feet in length with trees to 70 feet high at one end and to 20 feet high at the other. The approach was made towards the taller timber, with the wheels down and half flap in a cross wind of about 10 knots from the left. After touching down the pilot realized that the aircraft would overrun the available area and he immediately initiated a turn to the right. Because of the speed and the rough surface, the aircraft skidded sideways and the undercarriage collapsed. The aircraft performance chart indicates that an actual distance of 1,740 feet is required to stop the aircraft from a height of 50 feet when using full flap under the conditions existing at the time of the landing.

Download Final Report
[Download  PDF: 129KB]
General details
Date: 05 October 1969   Investigation status: Completed  
Time: 1250 EST    
Location: 22 miles SW Mundubbera    
State: Queensland   Occurrence type: Loss of control  
Release date: 04 February 1971   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Czechoslovak Automobile & A/C  
Aircraft model L40  
Aircraft registration VH-DUT  
Type of operation Private  
Damage to aircraft Substantial  
Departure point Roma  
Departure time 1132  
Destination Maryborough  
Crew details
Role Class of licence Hours on type Hours total
Pilot-in-Command Commercial 40 1200
Last update 13 May 2014