hestonfysh,
I know of internals starting in Dec, Feb, Mar and Apr (don’t think there is a Jan course and don’t think courses have been assigned past Apr but not 100% sure on this) all been given B787 PER but am hearing from a mate starting in Dec that there are Airbus 330 SYD spots being allocated as well.
Talk is the next round should open up in Nov/Dec (or maybe early next year) for internals. Not sure on externals.
hope that helps