Haha, just millimeters from crashing in that case. Aviation is terrible at any kind of SI or even any kind of sane standardization of units at all. Distance is

Haha, just millimeters from crashing in that case. Aviation is terrible at any kind of SI or even any kind of sane standardization of units at all. Distance is commonly measured in nautical miles (1852 meters), but visibility in the US is in statute miles (1600ish meter?) or feet, while Europe uses km or meters for visibility. Both US and Europe use feet for altitude, but China/Russia use meters for altitude.