My comment regarding Air NZ earlier I believe does have a defence relationship. At 53% ownership by the NZ government they must have a say for their investment. It may not be thw PM that makes the call but someone very senior in Govt gets to have input.
The aircraft being replaced are 14 years old. Yet the RNZAF struggles to replace 50 year old aircraft. The public who travel the world via Air NZ wouldnt be too pleased traveling on 707s and DC9s but they say nothing about their servicemen and women flying 50 year old aircraft.
If the recent leak of budget information is correct then it looks like there will be movement finally on needed defence acquisitions.
Given their value to the national well being there should be no backlash except from the vocal minority.
Lets see what budget day actually brings.
The Air NZ - RNZAF relationship is close and dates back to the TEAL days when they looked after the Sunderlands and Hastings for them at WP up until the acquisition of the Orions and Hercules in the mid 1960's. In recent decades there has always been investigations surrounding hand me down aircraft. For example the outgoing Air NZ B767-219's were considered 3 years ago as a quick fix to get down to the ice without PSR restrictions but discarded due to age and condition (they were older than the B752's by some margin).
Nevertheless the current Air NZ B777-219ER's will be available by 2022/3 and will be in excellent condition and will be cheap with the current market value for a 17-20 year old B772-ER less than $20m.
However there are a couple of key points to consider.
1. Without considerable rectification only the lower hold can be used.
2. The lower hold would have to be modified to handle and store mil standard 463L pallets as opposed to ULD's. Though this is not wildly difficult according to a USAF report which considered the conversion of B777's.
3. The 463L pallets would have a height limit of 64 inches.
Nevertheless ten 463L pallets can be thus stored in the lower deck. Six forward and four aft.
The main deck cabin of the Air NZ B777's were refurbished in 2015. Though there is excess pax seating capacity for NZ Govt / RNZAF needs one of the good ideas I heard to mitigate that was with the removal of the Premium economy class area a conference / working area could be installed and or Medevac/Triage facilities. It would at least enable the aircraft to concurrently airlift pax and cargo
The other consideration regarding ex Air NZ B777's is that the Trent engines though reliable and efficient their overhaul is not cheap. One or two overhauled spare Trent's would have to be available. On the other hand the fuel burn per hour for the B772 is double that of the 752. Of course the range of the B772 is far greater than the fairly short legs of the B752 which is well less than being Trans-Pacific.
It would of course would have to be a VfM proposition in 3 or so years time whether or not ex an Air NZ B772's would be acceptable even though the airline will continue to fly the stretched 773 and would be able to service it under contract, not withstanding the final mix of both the tactical and strategic FAMC solution.