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Pilot/Controller Glossary

Approach (SOIA) operations.  In SOIA, one straight

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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 separation used when providing
procedural control.
PROCEDURE TURN

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 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]

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 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

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 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

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 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 or to a minimum

altitude specified for the initial or intermediate approach segment of
a nonprecision instrument approach. The

profile descent normally terminates at the approach gate or where the
glideslope or other appropriate minimum

altitude is intercepted.
PROGRESS REPORT

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(See POSITION REPORT.)

PROGRESSIVE TAXI

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 Precise taxi instructions given to a pilot unfamiliar with the airport
or issued in stages

as the aircraft proceeds along the taxi route.
PROHIBITED AREA

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(See SPECIAL USE AIRSPACE.)
(See ICAO term PROHIBITED AREA.)

PROHIBITED AREA [ICAO]

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 An airspace of defined dimensions, above the land areas or territorial
waters

of a State, within which the flight of aircraft is prohibited.
PROMINENT OBSTACLE- An obstacle that meets one or more of the following
conditions:

a.

An obstacle which stands out beyond the adjacent surface of surrounding
terrain and immediately projects

a noticeable hazard to aircraft in flight.

b.

An obstacle, not characterized as low and close in, whose height is no
less than 300 feet above the departure

end of takeoff runway (DER) elevation, is within 10 NM from the DER,
and that penetrates that airport/heliport's

diverse departure obstacle clearance surface (OCS).

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