Sinpapore WSSS from AMML via WA???

[ZAZ]

Anyone know why an SIA 777 passed over Mt Gambier on way to Singapore just now and down at 28000 30000 feet?
I first saw it on my adsb in then saw if go over loud and fast at 28000 so checked FR24 and find its flight plan is slightly North of Perth then up the coast to Singapore.
not landing that I can tell not a great circle route in any sense of the imagination why not traditional route Mildura ASP North West?


AircraftBoeing 777-300ER (twin-jet) (H/B77W (https://flightaware.com/live/aircrafttype/B77W) – photos (https://flightaware.com/photos/aircrafttype/B77W))
Speed466 kts (planned: 476 kts)
(graph (https://flightaware.com/live/flight/SIA238/history/20160829/0030Z/YMML/WSSS/tracklog))Altitude 30,000 feet (planned: 28,000 feet) (graph (https://flightaware.com/live/flight/SIA238/history/20160829/0030Z/YMML/WSSS/tracklog))
DistanceDirect: 6,041 km Planned: 5,839 km
RouteDCT ESDIG V126 NOGIP/N0487F320 T65 VETAL/N0491F340 T65 TEKUP L513 TAPAX/N0496F360 Q27 HAMTN Q158 PH H17 GURAK N752 MALBI/N0485F380 N752 PLB G579


Currently on direct route to Perth maybe landing to p/u pax??

[emeritus]

Could be rerouted via PER or maybe that SIA flight planning computations calculate that route consumes less fuel than continuously punching into a jetstream that at the moment may be lying along the normal route.

Emeritus

[PoppaJo]

As you can see they would have got a great kick in this wind. I note Qantas and Jetstar took the same route. A few PER-SINs looked like they got it done in 4hrs. Impressive!

Got to keep the accountants happy!

https://s18.postimg.io/5vp3og1br/image.jpg

[HEALY]

The said accountants would be less than happy that the jet has too turn around and go back to Perth though