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Aeronautical Information Manual (AIM), page 660

Pilot/Controller Glossary 5/26/16


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 PROCEDURES
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- 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- A precision
instrument approach system which normally consists
12/10/15

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- 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:
a. Nonprecision Approach Runway-An instru-
ment runway served by visual aids and a nonvisual

aid providing at least directional guidance adequate

for a straight-in approach.

b. Precision Approach Runway, Category I-An
instrument runway served by ILS and visual aids
intended for operations down to 60 m (200 feet)
decision height and down to an RVR of the order of
800 m.

c. Precision Approach Runway, Category II-An

instrument runway served by ILS and visual aids

intended for operations down to 30 m (100 feet)
decision height and down to an RVR of the order of
400 m.

PCG I-4

Page 660 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures

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