heron
I remember the late Bill Webb telling me about ferrying a Heron to Australia.
He was supposed to refuel somewhere in the Indian Ocean ( Guam?) , but for some reason they neglected or forgot to open for him. He continued to Aus. annd landed after I think a 27hr flight.
Ferry tanks of course, but the main difficulty was topping up engine oil in flight via a "wobble" pump from drums in the cabin.
A lovely man missed by all who had the privilege of knowing and learning from him.
In his own Dove, TOSS, gear up, rotate!! Bigginites know what I mean.