This bus was owned by ERA from new until they sold/leased it to AH in late 2007. It spent its whole life in the Gulf.
Sounds like it is in pretty good shape for an old bus, AH did a lot of work bringing it up to spec I believe.
The ERA ex-chief pilot came out of hibernation to ferry it from the gulf for transport to OZ. I think he had a lot of history with the machine so it was fitting that he flew it on its final run in the states.
Maybe some ERA chaps could jump on and shed some light on its history prior to its reinvention on Horn.