Thanks for the info.
A ferry tank is both cheaper and easier when you ferry to Europe. However, if the aircraft ever has to go back, it needs a whole slew of approvals from various dignitaries and national air authorities. This is Europe after all. Last I heard a ferry tank would need a £6000 approval or temporary type certificate from the UK's CAA... That's why the built in option is desirable - they can't mess with that if it has a US STC.
The nature of my job is that I might spend 6 months in the US, then 6 months in Europe. That's an awful long time to be away from an aircraft you own. And owning two aircrafts, two insurances? I'm afraid I'm not that rich.
But who said aircraft ownership should be easy?
