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Pilot/Controller Glossary

3/29/18

PCG I−5

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.)
(Refer to IFIM.)

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.

a. Regions include:

1. African-Indian Ocean Region
2. Caribbean Region
3. European Region