12/31/20 AIM Mountainous Areas, 5 − 6 − 13 MSA.  See  Minimum Safe Altitudes MTA.  See  Minimum Turning Altitude (MTA) Multicom, 4 − 1 − 6 MVA.  See  Minimum Vectoring Altitudes NDB.  See  Nondirectional Radio Beacon Near Midair Collision, 7 − 7 − 2 NGA.  See  National Geospatial − Intelligence Agency NMAC.  See  Near Midair Collision Non − Charted Airspace Areas, 3 − 5 − 10 Nondirectional Radio Beacon, 1 − 1 − 1 Nonmovement Area Boundary Markings, 2 − 3 − 18 NOTAM.  See  Notice to Airmen Notice to Airmen, 5 − 1 − 2 NOTAM Contractions, 5 − 1 − 7 NOTAM D, 5 − 1 − 3 Notice to Airmen System, 5 − 1 − 2 National Forests, 7 − 5 − 1 National Geospatial − Intelligence Agency (NGA), 5 − 4 − 7 National Parks, 7 − 5 − 1 National Refuges, 7 − 5 − 1 National Security, 5 − 6 − 1 ADIZ, 5 − 6 − 1 ADIZ Requirements, 5 − 6 − 2 Civil Aircraft Operations, 5 − 6 − 3 Defense Area, 5 − 6 − 1 Requirements, 5 − 6 − 1 Territorial Airspace, 5 − 6 − 1 National Security Areas, 3 − 4 − 2 NAVAID Identifier Removal During Maintenance, 1 − 1 − 17 Maintenance, 1 − 1 − 17 Performance, User Report, 1 − 1 − 17 Service Volumes, 1 − 1 − 5 with Voice, 1 − 1 − 17 Navigation, Aids, 1 − 1 − 1 Nondirectional Radio Beacon, 1 − 1 − 1 Radio, VHF Omni − directional Range, 1 − 1 − 1 Navigation Reference System (NRS), 5 − 1 − 16 Navigation Specifications (Nav Specs), 1 − 2 − 4 Navigational Aids, Radio Distance Measuring Equipment, 1 − 1 − 5 Doppler Radar, 1 − 1 − 18 Identifier Removal During Maintenance, 1 − 1 − 17 Instrument Landing System, 1 − 1 − 10 Localizer − Type Directional Aid, 1 − 1 − 12 Long Range Navigation, 1 − 1 − 18 Navaid Service Volumes, 1 − 1 − 5 NAVAIDs with Voice, 1 − 1 − 17 Performance, User Report, 1 − 1 − 17 Simplified Directional Facility, 1 − 1 − 15 Tactical Air Navigation, 1 − 1 − 4 VHF Omni − directional Range/Tactical Air Navigation, 1 − 1 − 5 Inertial Navigation System, 1 − 1 − 18 P − static, 7 − 6 − 9 PAN − PAN, 6 − 3 − 1 PAPI.  See  Precision Approach Path Indicator PAR.  See  Precision Approach; Precision Approach Radar Parachute Jumps, 3 − 2 − 2, 3 − 5 − 5 Performance − Based Navigation (PBN), 1 − 2 − 1 Phonetic Alphabet, 4 − 2 − 5 Pilot Authority, 6 − 1 − 1 Responsibility, 4 − 1 − 14, 4 − 4 − 1, 4 − 4 − 4, 5 − 4 − 62, 5 − 5 − 1, 6 − 1 1, 7 4 − 6 Pilot Control of Airport Lighting, 2 − 1 − 9 Pilot Visits to Air Traffic Facilities, 4 − 1 − 1 Pilot Weather Reports, 7 − 1 − 39 Piracy, Air, Emergency, 6 − 3 − 6 PIREPs.  See  Pilot Weather Reports Planning for Cold Temperature, Cold Temperature, 7 − 3 − 1 Position Reporting, 5 − 3 − 14 Obstacle Departure Procedures, 5 − 2 − 6 Obstruction Alert, 4 − 1 − 11 Operation Take − off, 4 − 1 − 1 Operational Information System (OIS), 5 − 1 − 11 Option Approach, 4 − 3 − 26 O P N Index I − 8