CBR Rwy 35 query.
Been visiting a friend who lives about 10 nm south of Canberra airport and under the approach to Rwy 35.
In watching multiple aircraft using that runway for landing, there are two distinct, but very close tracks, utilised. One of them passes directly overhead his house whilst the other is displaced to the west by about 0.5 nm . The a/c that regularly go overhead are the 717's, Dash-8's, RAAF, Alliance et al. Consistently using the path slightly to the west are Qantas and Virgin 737's.
Is the difference because some aircraft use the ILS whilst those to the west are using a GPS/RNAV type approach approved for those companies? Looking at the Airservices charts for both the ILS and GPS 35 approaches, the inbound track is the same.
I cannot find the inbound track for a GPS approach that may be specific to QF and VA. Can someone possibly advise what that inbound track would be? No need for a chart to be posted, just the inbound track would be enough to explain the separated tracks.