Aviation safety investigations & reports

Cessna 182 RG, VH-SDG, Killarney NT, 9 June 1989

Investigation number:
Status: Completed
Investigation completed


Download Final Report
[Download  PDF: 22KB]

The pilot reported that he rolled the aircraft out of a turn at 4000 feet and then the engine spluttered and stopped. Trouble checks including advice from the base station failed to restore engine power. In the ensuing forced landing, the aircraft was apparently flared too high and it bounced heavily twice resulting in the collapse of the nosegear. An engine run and inspection of components failed to detect the cause of the loss of power but a detailed laboratory inspection of the ignition switch confirmed the cause of the engine failure. This inspection detected an intermittency in the ignition/magneto switch internal wiring when subject to vibration. The ignition key had a heavy metal clip attached to it and it is believed that the inertia of this clip on rollout from the turn was sufficient to interrupt the electrical continuity within the magneto switch and cause the engine failure.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 09 June 1989   Investigation status: Completed  
Time: 840    
Location: Killarney    
State: Northern Territory    
Release date: 18 September 1989   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 182  
Aircraft registration VH-SDG  
Serial number Ri8200743  
Type of operation Aerial Work  
Damage to aircraft Substantial  
Departure point Victoria River Downs NT  
Departure time 820  
Destination Gilnocknie NT