a situation in which, in the opinion of a pilot or air traffic services personnel, the distance between aircraft as well as their relative positions and speed have been such that the safety of the air, olukord, kus piloodi või lennuliiklusteenindusüksuse seisukohast, nii õhusõidukite vaheline kaugus kui ka suhteline asukoht ja kiirus on olnud sellised, et õhusõidukite turvalisus on olnud ohus