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The maingear uplock assembly had just been fitted with a new seal and the aircraft was flown to ensure the correct operation of the system. The gear retracted normally but could not be lowered and a gear up landing was made. Inspection revealed that the unit had been incorrectly reassembled after the seal was changed. The maintenance had been performed by an unlicenced engineer who had not previously completed a similar task. When carrying out the work he did not refer to either the aircraft maintenance manual or a licenced engineer. On completion of the job no retraction tests were carried out. The engineer believed that the work he had performed would only effect the operation of the gear doors, and not the retraction and extension of the landing gear.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 23 September 1987 Investigation status: Completed 
Time: 1833  
Location:Kununurra Investigation type: Occurrence Investigation 
State: Western Australia Occurrence type: Wheels up landing 
Release date: 11 March 1988 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 210 
Aircraft registration: VH-MHC 
Serial number: 210-59610 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Kununurra WA
Departure time:1655
Destination:Kununurra WA
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