5/19/22
Pilot/Controller Glossary
from an area having such routes but the departure or
arrival point is not listed in the Chart Supplement
U.S., pilots may use that part of a Preferred IFR Route
which is appropriate for the departure or arrival point
that is listed. Preferred IFR Routes may be defined by
DPs, SIDs, or STARs; NAVAIDs, Waypoints, etc.;
high or low altitude airways; or any combinations
thereof. Because they often share elements with
adapted routes, pilots’ use of preferred IFR routes can
minimize flight plan route amendments.
(See ADAPTED ROUTES.)
(See CENTER’S AREA.)
(See INSTRUMENT APPROACH
PROCEDURE.)
(See INSTRUMENT DEPARTURE
PROCEDURE.)
(See STANDARD TERMINAL ARRIVAL.)
(Refer to CHART SUPPLEMENT U.S.)
PRE-FLIGHT PILOT BRIEFING
−
(See PILOT BRIEFING.)
PREVAILING VISIBILITY
−
(See VISIBILITY.)
PRIMARY RADAR TARGET
−
An analog or digital
target, exclusive of a secondary radar target,
presented on a radar display.
PRM
−
(See AREA NAVIGATION (RNAV) GLOBAL
POSITIONING SYSTEM (GPS) PRECISION
RUNWAY MONITORING (PRM) APPROACH.)
(See PRM APPROACH.)
(See PRECISION RUNWAY MONITOR
SYSTEM.)
PRM APPROACH
−
An instrument approach
procedure titled ILS PRM, RNAV PRM, LDA PRM,
or GLS PRM conducted to parallel runways
separated by less than 4,300 feet and at least 3,000
feet where independent closely spaced approaches
are permitted. Use of an enhanced display with
alerting, a No Transgression Zone (NTZ), secondary
monitor frequency, pilot PRM training, and
publication of an Attention All Users Page are
required for all PRM approaches. Depending on the
runway spacing, the approach courses may be parallel
or one approach course must be offset. PRM
procedures are also used to conduct Simultaneous
Offset Instrument Approach (SOIA) operations. In
SOIA, one straight
−
in ILS PRM, RNAV PRM, GLS
PRM, and one offset LDA PRM, RNAV PRM or
GLS PRM approach are utilized. PRM procedures
are terminated and a visual segment begins at the
offset approach missed approach point where the
minimum distance between the approach courses is
3000 feet. Runway spacing can be as close as 750
feet.
(Refer to AIM.)
PROCEDURAL CONTROL [ICAO]– Term used to
indicate that information derived from an ATS
surveillance system is not required for the provision
of air traffic control service.
PROCEDURAL SEPARATION [ICAO]– The sepa-
ration used when providing procedural control.
PROCEDURE TURN
−
The maneuver prescribed
when it is necessary to reverse direction to establish
an aircraft on the intermediate approach segment or
final approach course. The outbound course,
direction of turn, distance within which the turn must
be completed, and minimum altitude are specified in
the procedure. However, unless otherwise restricted,
the point at which the turn may be commenced and
the type and rate of turn are left to the discretion of the
pilot.
(See ICAO term PROCEDURE TURN.)
PROCEDURE TURN [ICAO]
−
A maneuver in
which a turn is made away from a designated track
followed by a turn in the opposite direction to permit
the aircraft to intercept and proceed along the
reciprocal of the designated track.
Note 1: Procedure turns are designated “left” or
“right” according to the direction of the initial turn.
Note 2: Procedure turns may be designated as
being made either in level flight or while
descending, according to the circumstances of
each individual approach procedure.
PROCEDURE TURN INBOUND
−
That point of a
procedure turn maneuver where course reversal has
been completed and an aircraft is established inbound
on the intermediate approach segment or final
approach course. A report of “procedure turn
inbound” is normally used by ATC as a position
report for separation purposes.
(See FINAL APPROACH COURSE.)
(See PROCEDURE TURN.)
(See SEGMENTS OF AN INSTRUMENT
APPROACH PROCEDURE.)
PROFILE DESCENT
−
An uninterrupted descent
(except where level flight is required for speed
adjustment; e.g., 250 knots at 10,000 feet MSL) from
cruising altitude/level to interception of a glideslope
PCG P
−
4