Part 172 Air Traffic Service Organisations Certification

Subpart E Separation criteria and minima

172.251 - Vertical separation

172.253 - Composite visual separation

172.255 - Visual separation beyond the vicinity of an aerodrome

172.257 - Longitudinal separation by time

172.259 - Longitudinal separation by distance

172.261 - Lateral separation

172.263 - Separation between aircraft on an instrument approach

172.265 - Reduced separation when providing an ATS surveillance service

172.267 - Separation from an unidentified controlled flight by ATS surveillance service

172.269 - Separation from holding aircraft in the ATS surveillance service

172.271 - Formation flights

172.273 - Reduced runway separation general

172.275 - Reduced runway separation departure versus departure

172.277 - Reduced runway separation arrival versus departure

172.279 - Reduced runway separation arrival versus arrival

172.281 - Operations on parallel runways

172.283 - Separation from an aircraft dumping fuel

172.285 - Separation involving military aircraft

172.287 - Separation of successive departures using IFR

172.289 - Helicopters and unpowered aircraft

172.291 - Wake turbulence separation

172.293 - Separation from active special use airspace

Subpart F Standard phraseology