OverRun
is Y19 the MEL-PER direct airways route?
The Y19 route will get you from PER – ADL via HALIT and HYDRA.
what are the ETOPS air routes in mainland Australia?
As far as ETOPS routes in Australia, they don’t really need them. If you take every adequate airport on the
VB network, they always fly within a 428nm (-800W) radius of these airports.