Order 7110.65P, Air Traffic Control, with changes

2/19/047110.65Pc. When an aircraft is climbing or descendingthrough the altitude of another aircraft:1. Between DME equipped aircraft; RNAVequipped aircraft using LTD; and between DME andLTD aircraft provided the DME aircraft is either10,000 feet or below or outside of 10 miles from theDME NAVAID− 10 miles, if the descending aircraftis leading or the climbing aircraft is following.(See FIG 6−4−7 and FIG 6−4−8.)FIG 6−4−7Descending Through Another Aircraft’sAltitude DME Separation3. Between RNAV aircraft that are operatingalong an RNAV route that is eight miles or less inwidth− 10 miles provided the following conditionsare met:(a) The descending aircraft is leading or theclimbing aircraft is following.(b) The aircraft were separated by not morethan 4,000 feet when the altitude change started.FIG 6−4−9Descending Through AnotherAircraft’s Altitude Timed SeparationFIG 6−4−8Climbing Through Another Aircraft’sAltitude DME SeparationFIG 6−4−10Climbing Through AnotherAircraft’s Altitude Timed Separation2. Between other aircraft− 5 minutes, if all of thefollowing conditions are met:(See FIG 6−4−9 and FIG 6−4−10.)(a) The descending aircraft is leading orclimbing aircraft is following.(b) The aircraft are separated by not morethan 4,000 feet when the altitude change started.(c) The change is started within 10 minutesafter a following aircraft reports over a fix reportedover by the leading aircraft or has acknowledged aclearance specifying the time to cross the same fix.Longitudinal Separation6−4−3