Pilot/Controller Glossary Pilot/Controller Glossary  8/15/19 7/16/20  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).  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.  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.  (See SEGMENTS OF AN INSTRUMENT  APPROACH PROCEDURE.)  INTERNATIONAL AIRPORT- Relating to interna- tional flight, it means:  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;  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.)  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.  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.  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.  INTERNATIONAL NOTICES- A notice containing  flight prohibitions, potential hostile situations, or  other international/ foreign oceanic airspace matters.  These notices can be found on the International  Notices website, updated every 28 days.  PCG I-5 