....., the 7 in RAAF service now will be close to 20yo by the time the new aircraft arrive, have reasonable re-sale value, more supportable due to airlines replacing older A330s with neo's.
If you compare the age of the RAAF KC-30A fleet to the USAF KC-135 fleet, the KC-30As are mere pups.
My understanding is the last new KC-135 was delivered in 1965, eg, they are 50++ years old, and that’s the youngest airframes too.
The RAAF KC-30A fleet are mere teenagers in comparison.
Anyway....
Back to the 2016 LNP DWP, it was suggested that an 8th and 9th KC-30A was being considered. Unfortunately by the 2020 LNP DSU, those plans were abandoned.
But, all was not lost....
The Government made it clear that the eventual replacement fleet would be expanded.
There is (was?), a project named ‘KC-30A Replacement’ planned time commence around 2033 through to the 2040s, with a budget of $17.5b to $26.2b.
That is a huge amount of dollars planned to be spent.
Anyway....
Let’s wait and see if the rumour of the Albo ALP Government adding 2 x KC-30A comes true.
For ease of commonality and support, I would imagine the RAAF would look to obtaining airframes of a similar age and configuration to the existing fleet.
The two second hand airframes (6th and 7th KC-30A), were ex Qantas (similar age and configuration of the five RAAF new built airframes), the ‘potential’ 8th and 9th might also be from that same production period too (Qantas still operate 16 x A330-200).