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The aircraft was involved in local flying. On the final landing and during touchdown, the landing gear collapsed and the aircraft slid to rest on the runway. The pilot advised that the landing gear selector switch had been accidentally bumped to the`UP' position by the knee of the front seat passenger. Inspection of the landing gear selector switch revealed that the plastic identification knob had been screwed too far onto the switch arm. This rendered the locking function of the switch ineffective.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 06 October 1989 Investigation status: Completed 
Time: 830  
Location:Lightning Ridge Investigation type: Occurrence Investigation 
State: New South Wales Occurrence type: Wheels up landing 
Release date: 24 April 1990 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Beech Aircraft Corp 
Aircraft model: 36 
Aircraft registration: VH-WMK 
Serial number: E-1450 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Lightning Ridge NSW
Departure time:N/K
Destination:Lightning Ridge NSW
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