Air Traffic Control, FAA Order 7110.65, outlines the procedures and phraseology you
will use to conduct a PAR (as well as surveillance) approach.
Glide Path and Course Information
The RADAR final controller must issue course guidance and inform the aircraft when it
is on glide path and on course, and you must frequently inform the aircraft of any
deviation from glide path or course. Transmissions with aircraft on precision final
approach should occur approximately every 5 seconds.
Issue the trend information as required to indicate target position with respect to the
azimuth and elevation cursors and to describe target movement as appropriate
corrections are issued. Trend information may be modified by the terms ―RAPIDLY‖ or
―SLOWLY‖ as appropriate.
PAR Target Interpretation and Glide Path Standards
To obtain maximum signal return from aircraft targets, controllers shall adjust the
azimuth antenna servo (elevation range marks) on the elevation target and the elevation
antenna servo (azimuth range marks) on the azimuth target. To facilitate accurate and
precise aircraft target relationship to elevation (glide path and lower safe limit) and
azimuth (course) cursors, controllers shall adjust the IF GAIN control to create the
smallest possible usable target.
Using exaggerated/blooming targets will result in the
issuance of erroneous glide path and course information.
The RADAR final controller shall issue precise glide path information for the pilot to
establish and maintain a proper rate of descent. The controller shall mentally divide the
elevation target into quarters to advise the pilot of any deviation from glide path (see