It can result in a "deadend" clearance (i.e., a vector assigned without explanation)
These disadvantages can be minimized by following two simple rules:
Always know what the vector is meant to achieve when it takes you off your previously
assigned route. The controller should specify this (e.g., "Vector to join V198 at PENSI,"
"Vector to Crestview," "Vectors around traffic," "Vectors for noise abatement.")
Keep yourself oriented on the RMI using VOR/TACAN and be prepared to navigate in
accordance with your most recent clearance in the event you lose communications or are
instructed to "Resume Own Navigation . . ."
"Radar contact" does not mean the controller is providing terrain and
obstacle clearance; ATC does not guarantee terrain or obstruction
clearance until you are on vectors.
Radar facilities can provide other services upon request. They can verify the accuracy of
questionable aircraft NAVAIDS by providing airway centerline checks (e.g., "Radar shows you five
miles south of V4."), provide position reports over fixes and in some cases, radar can provide
vectors around severe weather.
Center or approach radar should be used for severe weather
avoidance. The ability of such radar to detect severe weather is
not, however, uniform site to site.
When told you are in "radar contact," the controller knows exactly where you are. Therefore,
you should discontinue position reports.
The majority of your flights throughout your career will be in a radar environment; therefore, the
majority of your training will be conducted using radar environment radio communications. On
I2205, you will be introduced to the radar environment and its associated radio calls, and you
will practice them throughout the remainder of your primary RI training.
GENERAL RADIO COMMUNICATIONS REQUIREMENTS
The following reports should be made without a specific request from ATC:
At all times:
When vacating any previously assigned altitude/flight level for a new
When unable to climb/descend at a rate of at least 500 FPM.
5-2 RADIO INSTRUMENTS COMMUNICATIONS