8/15/19 1/30/20  Pilot/Controller Glossary Pilot/Controller Glossary  b.  U.S. military standard instrument approach  procedures are approved and published by the  Department of Defense.  c.  Special instrument approach procedures are  approved by the FAA for individual operators but are  not published in 14 CFR Part 97 for public use.  (See ICAO term INSTRUMENT APPROACH  PROCEDURE.)  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 PROCEDURE  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 (IFR)- 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 (ILS)- A  precision instrument approach system which normal- ly consists of the following electronic components  and visual aids:  INSTRUMENT METEOROLOGICAL CONDI- TIONS (IMC)- 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.  Localizer.  b.  Glideslope.  c.  Outer Marker.  d.  Middle Marker.  e.  Approach Lights.  (See LOCALIZER.)  (See GLIDESLOPE.)  (See OUTER MARKER.)  (See MIDDLE MARKER.)  PCG I-4  (See AIRPORT LIGHTING.)  (Refer to 14 CFR Part 91.)  (Refer to AIM.) 