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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 Investigation type: Occurrence Investigation 
Location:22 miles SW Mundubbera Occurrence type:Loss of control 
State: Queensland Occurrence class: Technical 
Release date: 04 February 1971 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
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
RoleClass of licenceHours on typeHours total
Pilot-in-CommandCommercial401200
 
 
 
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Last update 13 May 2014