(2)
PRECISION APPROACH RUNWAY, CATEGORY I - An instrument runway served by Instrument Landing Systems and visual aids intended for Operations down to 60 meters (200 feet) Decision Height and down to a Runway Visual Range of the order of 800 meters (2625 feet).
(3)
PRECISION APPROACH RUNWAY, CATEGORY II - An instrument runway served by Instrument Landing System and visual aids intended for Operations down to 30 meters (100 feet) Decision Height and down to a Runway Visual Range of the order of 400 meters (1312 feet).
(4)
PRECISION APPROACH RUNWAY, CATEGORY III - An instrument runway served by Instrument Landing Systems to and along the surface of the runway and:
(a)
Intended for Operations down to a Runway Visual Range of the order of 200 meters (656 feet) (no Decision Height being applicable) using visual aids during the final phase of landing;
(b)
Intended for Operations down to a Runway Visual Range of the order of 50 meters (164 feet) (no Decision Height being applicable) using visual aids for taxiing;
(c)
Intended for Operations without reliance on visual reference for landing or taxiing.
NOTE - See Annex 10, Volume I, Part I Chapter 3, for related Instrument Landing System specifications.
NOTE - Visual aids need not necessarily be matched to the scale of non-visual aids provided. The criterion for the selection of visual aids is the conditions in which Operations are intended to be conducted.
INTER - Used in Meteorological messages (See Landing Forecast Trend Type).
INTERMEDIATE APPROACH SEGMENT - (See Segments of an Instrument Approach Procedure)
INTERMEDIATE FIX/IF - 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)
INTERNATIONAL AIRPORT (P/CG) - Relating to international flight, it means:
(1)
An airport of entry which has been designated by the Secretary of Treasury or Commissioner of Customs as an international airport for customs service.
(2)
A landing rights airport at which specific permission to land must be obtained from customs authorities in advance of contemplated use.
(3)
Airports designated under the Convention on International Civil Aviation as an airport for use by international commercial air transport and/or international general aviation.
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 ORGANIZATION/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.
INTERNATIONAL FLIGHT INFORMATION MANUAL/IFIM - A Federal Aviation Administration publication designed primarily as a pilot's preflight planning guide for flight into foreign airspace and for flights returning to the United States from foreign locations.
INTERROGATOR - The ground-based surveillance radar beacon transmitter-receiver which normally scans in synchronism with a primary radar, transmitting discrete radio signals which repetitiously request all transponders, on the mode being used, to reply. The replies received are mixed with the primary radar returns and displayed on the same plan position indicator (radar scope). Also applied to the airborne element of the TACAN/DME system. (See Transponder)
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