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Pilot/Controller Glossary

3/29/18

PCG I

−5

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.

d.

Precision Approach Runway, Category III

− An

instrument runway served by ILS to and along the
surface of the runway and:

1.

Intended for operations down to an RVR of

the order of 200 m (no decision height being
applicable) using visual aids during the final phase of
landing;

2.

Intended for operations down to an RVR of

the order of 50 m (no decision height being
applicable) using visual aids for taxiing;

3.

Intended for operations without reliance on

visual reference for landing or taxiing.

Note 1: See Annex 10 Volume I, Part I, Chapter 3,

for related ILS specifications.

Note 

2: Visual aids need not necessarily be

matched to the scale of nonvisual aids provided.
The criterion for the selection of visual aids is the
conditions in which operations are intended to be
conducted.

INTEGRITY

− The ability of a system to provide

timely warnings to users when the system should not
be used for navigation.

INTERMEDIATE APPROACH SEGMENT

(See SEGMENTS OF AN INSTRUMENT

APPROACH PROCEDURE.)

INTERMEDIATE APPROACH SEGMENT
[ICAO]

− That segment of an instrument approach

procedure between either the intermediate approach
fix and the final approach fix or point, or between the
end of a reversal, race track or dead reckoning track

procedure and the final approach fix or point, as
appropriate.

INTERMEDIATE FIX

− The fix that identifies the

beginning of the intermediate approach segment of an
instrument approach procedure. The fix is not
normally identified on the instrument approach chart
as an intermediate fix (IF).

(See SEGMENTS OF AN INSTRUMENT

APPROACH PROCEDURE.)

INTERMEDIATE LANDING

− On the rare occasion

that this option is requested, it should be approved.
The departure center, however, must advise the
ATCSCC so that the appropriate delay is carried over
and assigned at the intermediate airport. An
intermediate landing airport within the arrival center
will not be accepted without coordination with and
the approval of the ATCSCC.

INTERNATIONAL AIRPORT

− Relating to interna-

tional flight, it means:

a.

An airport of entry which has been designated

by the Secretary of Treasury or Commissioner of
Customs as an international airport for customs
service.

b.

A landing rights airport at which specific

permission to land must be obtained from customs
authorities in advance of contemplated use.

c.

Airports designated under the Convention on

International Civil Aviation as an airport for use by
international commercial air transport and/or interna-
tional general aviation.

(See ICAO term INTERNATIONAL AIRPORT.)
(Refer to Chart Supplement U.S.)

INTERNATIONAL AIRPORT [ICAO]

− Any airport

designated by the Contracting State in whose
territory it is situated as an airport of entry and
departure for international air traffic, where the
formalities incident to customs, immigration, public
health, animal and plant quarantine and similar
procedures are carried out.

INTERNATIONAL CIVIL AVIATION ORGA-
NIZATION [ICAO]

− A specialized agency of the

United Nations whose objective is to develop the
principles and techniques of international air
navigation and to foster planning and development of
international civil air transport.

INTERROGATOR

− The ground-based surveillance

radar beacon transmitter-receiver,  which normally
scans in synchronism with a primary radar,

2/28/19

Pilot/Controller Glossary