Also, in routine operations in friendly airspace, the reflectors paint a nice big fat dot on ATC radars (and the radars on aircraft) which provides another layer of proximity-mishap-avoidance (over and above the existing TCAS)
Also, in routine operations in friendly airspace, the reflectors paint a nice big fat dot on ATC radars (and the radars on aircraft) which provides another layer of proximity-mishap-avoidance (over and above the existing TCAS)