Five fours and almost no flights
Bombardier Global 7500 · N44440
N44440 is a Bombardier Global 7500, the same ultra-long-range flagship as one other aircraft on this board, and it carries one of the tidier vanity registrations in the American registry.
It is also, by our log, one of the least visible aircraft here. We have caught it airborne barely at all.
That is worth sitting with rather than explaining away, because it is the ordinary state of a lot of private aviation and it runs against the impression these aircraft give. An airframe of this class is capable of crossing the Pacific. It does not follow that it does so often. Business jets spend the overwhelming majority of their lives parked, and a quiet card here is far more likely to be an aeroplane in a hangar than a tracking failure.
The alternative explanations apply as they do everywhere on this board: a flight outside receiver coverage, or a transponder broadcasting under a temporary privacy identifier, would both look exactly like this. We cannot separate those from the outside, and we do not pretend to.
What we have actually seen: picked up airborne
5 times since we started
logging on 14 July 2026, most
recently 9 September, at up to
45,000 ft.
Every other jet on the board is below.