Aviation safety investigations & reports

Navigation event - 6 km south of Ballarat, Vic., 31 May 2007

Investigation number:
Status: Completed
Investigation completed


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On 31 May 2007, the pilot of a Beech Aircraft Corp. Super King Air, registered VH-XCB, was conducting an Area Navigation (RNAV) Global Navigation Satellite System (GNSS) non-precision approach (NPA) to runway 36 at Ballarat, Vic. in instrument meteorological conditions (IMC) as part of a check flight for renewal of a command instrument rating. While conducting the approach, the check pilot on board visually determined that the aircraft was displaced outside the permitted lateral tolerances of the published final approach track. The pilot's primary flight display showed that the aircraft was within permitted tolerances and there were no associated messages or alerts.

An examination of the aircraft's navigation equipment by an avionics technician found that the installation was not approved for the procedure and a technical problem prevented the equipment from meeting approval standards.

The operator of the aircraft annotated the aircraft's maintenance release to reflect that the Global Positioning System (GPS) was not approved for use in the conduct of RNAV (GNSS) NPAs.

Download Final Report
[Download  PDF: 109KB]
General details
Date: 31 May 2007   Investigation status: Completed  
Time: 0001 EST   Investigation level: Systemic - click for an explanation of investigation levels  
Location   (show map): 6 km south of Ballarat    
State: Victoria   Occurrence type: Avionics/flight instruments  
Release date: 18 March 2009   Occurrence category: Serious Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Beech Aircraft Corp  
Aircraft model 200  
Aircraft registration VH-XCB  
Serial number BB-1472  
Type of operation Flying Training  
Damage to aircraft Nil  
Departure point Essendon, Vic.  
Destination Essendon, Vic.  
Last update 03 April 2020