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.
|Date:||31 May 2007||Investigation status:||Completed|
|Time:||0001 EST||Investigation level:||Complex - click for an explanation of investigation levels|
|Location:||6 km south of Ballarat|
|State:||Victoria||Occurrence type:||Avionics/flight instruments|
|Release date:||18 March 2009||Occurrence class:||Technical|
|Report status:||Final||Occurrence category:||Serious Incident|
|Highest injury level:||None|
|Aircraft manufacturer||Beech Aircraft Corp|
|Type of operation||Flying Training|
|Damage to aircraft||Nil|
|Departure point||Essendon, Vic.|