Mmmm ...
....
So how do McDermotts keep their aircraft on the N register for so long in PNG, NZ, Aussie, Noumea?....
More than likely their aircraft do not stay in PNG for more than the allotted 6 months ... perhaps they swap out aircraft as necessary to maintain their status quo ...
Some owners also (effectively) run 2 sets of aircraft (& maintenance)logs to allow for easy CoA and CoReg changes ... this is very practical and when you have engineers with the appropriate coverage very easy to achieve .... so why not !!
