Originally Posted by
sciconf
Actually one of the party has expired AU passport - he was thinking of getting a e-visa if approved intended for US Citizens - are u saying that he can just go there with the expired AU passport - will the airline, Qantas, let him board - of course, he will leave AU with a valid US passport?
That's probably a bad idea. Many countries require their citizens to enter using the local passport.
Save yourselves some potential hassles and get the PPs renewed before the trip. Even if it costs a bit more for expedited service.