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Pilot/Controller Glossary

3/29/18

PCG I−4

under 14 CFR Part 97 and are available for public

use.

b. U.S. military standard instrument approach

procedures are approved and published by the

Department of Defense.

c. Special instrument approach procedures are

approved by the FAA for individual operators but are

not published in 14 CFR Part 97 for public use.

(See ICAO term INSTRUMENT APPROACH

PROCEDURE.)

INSTRUMENT APPROACH PROCEDURE

[ICAO]− A series of predetermined maneuvers by

reference to flight instruments with specified

protection from obstacles from the initial approach

fix, or where applicable, from the beginning of a

defined arrival route to a point from which a landing

can be completed and thereafter, if a landing is not

completed, to a position at which holding or en route

obstacle clearance criteria apply.

(See ICAO term INSTRUMENT APPROACH

OPERATIONS)

INSTRUMENT APPROACH PROCEDURE

CHARTS−

(See AERONAUTICAL CHART.)

INSTRUMENT DEPARTURE PROCEDURE

(DP)− A preplanned instrument flight rule (IFR)

departure procedure published for pilot use, in

graphic or textual format, that provides obstruction

clearance from the terminal area to the appropriate en

route structure. There are two types of DP, Obstacle

Departure Procedure (ODP), printed either textually

or graphically, and, Standard Instrument Departure

(SID), which is always printed graphically.

(See IFR TAKEOFF MINIMUMS AND

DEPARTURE PROCEDURES.)

(See OBSTACLE DEPARTURE PROCEDURES.)
(See STANDARD INSTRUMENT DEPARTURES.)
(Refer to AIM.)

INSTRUMENT DEPARTURE PROCEDURE (DP)

CHARTS−

(See AERONAUTICAL CHART.)

INSTRUMENT FLIGHT RULES (IFR)− Rules

governing the procedures for conducting instrument

flight. Also a term used by pilots and controllers to

indicate type of flight plan.

(See INSTRUMENT METEOROLOGICAL

CONDITIONS.)

(See VISUAL FLIGHT RULES.)
(See VISUAL METEOROLOGICAL

CONDITIONS.)

(See ICAO term INSTRUMENT FLIGHT

RULES.)

(Refer to AIM.)

INSTRUMENT FLIGHT RULES [ICAO]− A set of

rules governing the conduct of flight under

instrument meteorological conditions.
INSTRUMENT LANDING SYSTEM (ILS)−  A

precision instrument approach system which normal-

ly consists of the following electronic components

and visual aids:

a. Localizer.

(See LOCALIZER.)

b. Glideslope.

(See GLIDESLOPE.)

c. Outer Marker.

(See OUTER MARKER.)

d. Middle Marker.

(See MIDDLE MARKER.)

e. Approach Lights.

(See AIRPORT LIGHTING.)
(Refer to 14 CFR Part 91.)
(Refer to AIM.)

INSTRUMENT METEOROLOGICAL CONDI-

TIONS (IMC)− Meteorological conditions expressed

in terms of visibility, distance from cloud, and ceiling

less than the minima specified for visual meteorolog-

ical conditions.

(See INSTRUMENT FLIGHT RULES.)
(See VISUAL FLIGHT RULES.)
(See VISUAL METEOROLOGICAL

CONDITIONS.)

INSTRUMENT RUNWAY− A runway equipped

with electronic and visual navigation aids for which

a precision or nonprecision approach procedure

having straight-in landing minimums has been

approved.

(See ICAO term INSTRUMENT RUNWAY.)

INSTRUMENT RUNWAY [ICAO]− One of the

following types of runways intended for the

operation of aircraft using instrument approach

procedures: