WorldTraveler said:
The real question is why UA diverted to an airport where there was not customs and immigration.
In a perfect world, you divert to an airport with a FIS. In reality, you have to go to the first available place you can safely land.
It sounds like the airport closed when they were already on approach, otherwise they could have probably gone to OOL or BNE with some advance notice.
Once committed to SYD, getting to either MEL or BNE would have required another 500 miles of flying, and I don't know what the reserve requirements are for fuel, but both destinations are over 60 minutes added flying.
CBR was just 150 miles, a little over 20 minutes... The only other airport which might have been suitable for a widebody was NTL (Newcastle), about 90 miles northeast of SYD. It didn't have an FIS, either.
Also... while it's normal for WT to take cheap shots at anyone other than DL's contingency plans are or aren't, keep in mind they've been flying their own metal to Oz since the 1980's. I suspect they've had to deal with diversions to offline cities before.
Had this been a DL flight, I'm sure they would have had extra fuel to make it to BNE or MEL. Or maybe they would have refueled in-flight. They do own a refinery, you know...