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Pilot/Controller Glossary

3/29/18

PCG C

−5

COMBINED CENTER-RAPCON

− An air traffic

facility which combines the functions of an ARTCC
and a radar approach control facility.

(See AIR ROUTE TRAFFIC CONTROL

CENTER.)

(See RADAR APPROACH CONTROL

FACILITY.)

COMMON POINT

− A significant point over which

two or more aircraft will report passing or have
reported passing before proceeding on the same or
diverging tracks. To establish/maintain longitudinal
separation, a controller may determine a common
point not originally in the aircraft’s flight plan and
then clear the aircraft to fly over the point.

(See SIGNIFICANT POINT.)

COMMON PORTION

(See COMMON ROUTE.)

COMMON ROUTE

− That segment of a North

American Route between the inland navigation
facility and the coastal fix.

OR

COMMON ROUTE

− Typically the portion of a

RNAV STAR between the en route transition end
point and the runway transition start point; however,
the common route may only consist of a single point
that joins the en route and runway transitions.

COMMON TRAFFIC ADVISORY FREQUENCY
(CTAF)

− A frequency designed for the purpose of

carrying out airport advisory practices while
operating to or from an airport without an operating
control tower. The CTAF may be a UNICOM,
Multicom, FSS, or tower frequency and is identified
in appropriate aeronautical publications.

(See DESIGNATED COMMON TRAFFIC

ADVISORY FREQUENCY (CTAF) AREA.)

(Refer to AC 90-42, Traffic Advisory Practices at

Airports Without Operating Control Towers.)

COMPASS LOCATOR

− A low power, low or

medium frequency (L/MF) radio beacon installed at
the site of the outer or middle marker of an instrument
landing system (ILS). It can be used for navigation at
distances of approximately 15 miles or as authorized
in the approach procedure.

a.

Outer Compass Locator (LOM)

− A compass

locator installed at the site of the outer marker of an
instrument landing system.

(See OUTER MARKER.)

b.

Middle Compass Locator (LMM)

− A compass

locator installed at the site of the middle marker of an
instrument landing system.

(See MIDDLE MARKER.)
(See ICAO term LOCATOR.)

COMPASS ROSE

− A circle, graduated in degrees,

printed on some charts or marked on the ground at an
airport. It is used as a reference to either true or
magnetic direction.

COMPLY WITH RESTRICTIONS

− An  ATC

instruction that requires an aircraft being vectored
back onto an arrival or departure procedure to comply
with all altitude and/or speed restrictions depicted on
the procedure. This term may be used in lieu of
repeating each remaining restriction that appears on
the procedure.

COMPOSITE FLIGHT PLAN

− A flight plan which

specifies VFR operation for one portion of flight and
IFR for another portion. It is used primarily in
military operations.

(Refer to AIM.)

COMPULSORY REPORTING POINTS

− Reporting

points which must be reported to ATC. They are
designated on aeronautical charts by solid triangles or
filed in a flight plan as fixes selected to define direct
routes. These points are geographical locations
which are defined by navigation aids/fixes. Pilots
should discontinue position reporting over compul-
sory reporting points when informed by ATC that
their aircraft is in “radar contact.”

CONDITIONS NOT MONITORED

− When an

airport operator cannot monitor the condition of the
movement area or airfield surface area, this
information is issued as a NOTAM. Usually
necessitated due to staffing, operating hours or other
mitigating factors associated with airport operations.

CONFIDENCE MANEUVER

− A confidence man-

euver consists of one or more turns, a climb or
descent, or other maneuver to determine if the pilot
in command (PIC) is able to receive and comply with
ATC instructions.

CONFLICT ALERT

− A function of certain air traffic

control automated systems designed to alert radar
controllers to existing or pending situations between
tracked targets (known IFR or VFR aircraft) that
require his/her immediate attention/action.

(See MODE C INTRUDER ALERT.)

CONFLICT RESOLUTION

− The resolution of

potential conflictions between aircraft that are radar

2/28/19

Pilot/Controller Glossary