The combined height of a blackhawk and a large jet is about 60ft. The combined length is a bit over 300ft, and since neither aircraft is unlikely to be level, s

The combined height of a blackhawk and a large jet is about 60ft. The combined length is a bit over 300ft, and since neither aircraft is unlikely to be level, some portion of that length gets contributed to their effective height while flying. Just given the size of the aircraft, I wouldn't be surprised if they can potentially overlap even if their altimeters are 100ft apart.