8/15/19 1/30/20  Pilot/Controller Glossary Pilot/Controller Glossary  IFR AIRCRAFT- An aircraft conducting flight in  accordance with instrument flight rules.  IFR CONDITIONS- Weather conditions below the  minimum for flight under visual flight rules.  (See INSTRUMENT METEOROLOGICAL  CONDITIONS.)  IFR MILITARY TRAINING ROUTES (IR)- Routes  used by the Department of Defense and associated  Reserve and Air Guard units for the purpose of  conducting low-altitude navigation and tactical  training in both IFR and VFR weather conditions  below 10,000 feet MSL at airspeeds in excess of 250  knots IAS.  IFR TAKEOFF MINIMUMS AND DEPARTURE  PROCEDURES- Title  14 Code of Federal  Regulations Part 91, prescribes standard takeoff rules  for certain civil users. At some airports, obstructions  or other factors require the establishment of  nonstandard takeoff minimums, departure proce- dures, or both to assist pilots in avoiding obstacles  during climb to the minimum en route altitude. Those  airports are listed in FAA/DOD Instrument Approach  Procedures (IAPs) Charts under a section entitled  “IFR Takeoff Minimums and Departure Procedures.”  The FAA/DOD IAP chart legend illustrates the  symbol used to alert the pilot to nonstandard takeoff  minimums and departure procedures. When depart- ing IFR from such airports or from any airports where  there are no departure procedures, DPs, or ATC  facilities available, pilots should advise ATC of any  departure limitations. Controllers may query a pilot  to determine acceptable departure directions, turns,  or headings after takeoff. Pilots should be familiar  with the departure procedures and must assure that  their aircraft can meet or exceed any specified climb  gradients.  IF/IAWP- Intermediate Fix/Initial Approach Way- point. The waypoint where the final approach course  of a T approach meets the crossbar of the T. When  IMMEDIATELY- Used by ATC or pilots when such  action compliance is required to avoid an imminent  situation.  c.  IIIC.-An ILS approach procedure which  provides for approach without a decision height  minimum and without runway visual range  minimum.  b.  IIIB.-An ILS approach procedure which  provides for approach without a decision height  minimum and with runway visual range of not less  than 150 feet.  a.  IIIA.-An ILS approach procedure which  provides for approach without a decision height  minimum and with runway visual range of not less  than 700 feet.  ILS CATEGORIES- 1. Category I. An ILS approach  procedure which provides for approach to a height  above touchdown of not less than 200 feet and with  runway visual range of not less than 1,800 feet.- 2. Special Authorization Category I. An ILS  approach procedure which provides for approach to  a height above touchdown of not less than 150 feet  and with runway visual range of not less than 1,400  feet, HUD to DH. 3. Category II. An ILS approach  procedure which provides for approach to a height  above touchdown of not less than 100 feet and with  runway visual range of not less than 1,200 feet (with  autoland or HUD to touchdown and noted on  authorization, RVR 1,000 feet).- 4. Special  Authorization Category II with Reduced Lighting.  An ILS approach procedure which provides for  approach to a height above touchdown of not less  than 100 feet and with runway visual range of not less  than 1,200 feet with autoland or HUD to touchdown  and noted on authorization (no touchdown zone and  centerline lighting are required).- 5. Category III:  designated (in conjunction with a TAA) this  waypoint will be used as an IAWP when approaching  the airport from certain directions, and as an IFWP  when beginning the approach from another IAWP.  IFWP- Intermediate Fix Waypoint  ILS- (See INSTRUMENT LANDING SYSTEM.)  (Refer to AIM.)  IM- (See INNER MARKER. )  IMC- (See INSTRUMENT METEOROLOGICAL  CONDITIONS.)  IFR DEPARTURE PROCEDURE- (See IFR TAKEOFF MINIMUMS AND  DEPARTURE PROCEDURES.)  IFR FLIGHT- (See IFR AIRCRAFT.)  IFR LANDING MINIMUMS- (See LANDING MINIMUMS.)  PCG I-2 