Pilot/Controller Glossary

8/15/19

PCG I

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4

transfer of an aircraft under instrument flight
conditions from the beginning of the initial approach
to a landing or to a point from which a landing may
be made visually. It is prescribed and approved for a
specific airport by competent authority.

(See SEGMENTS OF AN INSTRUMENT

APPROACH PROCEDURE.)

(Refer to 14 CFR Part 91.)
(Refer to AIM.)

a.

U.S. civil standard instrument approach

procedures are approved by the FAA as prescribed
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]

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 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

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(See AERONAUTICAL CHART.)

INSTRUMENT DEPARTURE PROCEDURE
(DP)

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 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

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(See AERONAUTICAL CHART.)

INSTRUMENT FLIGHT RULES (IFR)

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 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]

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 A set of

rules governing the conduct of flight under
instrument meteorological conditions.

INSTRUMENT LANDING SYSTEM (ILS)

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  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)

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 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

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 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.)