Abbreviations ATP
CTAF
Common Traffic Advisory Frequency.
VPA
Vertical Path Angle.
TCH
Threshold Crossing Height.
DR
Dead Reckoning.
ASR
Airport Surveillance Radar / Advisory Route.
NOZ
Normal Operating Zone.
NTZ
No Transgression Zone.
IAVW
International Airways Volcano Watch.
ADS-B
Automatic Dependent Surveillance - Broadcast.
ACAS
Airborne Collision Avoidance System.
MVA
Minimum Vectoring Altitude.
MOA
Military Operations Area.
SMA
Segment Minimum Altitude.
SMSA
Segment Minimum Safe Altitude.
GP
Glide Path
GS
Glide Slope.
PAR
Precision Approach Radar.
ARINC
Aeronautical Radio Incorporated.
MAHF
Missed Approach Holding Fix.
HAA
Height Above Airport.
AWOS
Automatic Weather Observing System.
GCO
Ground Communications Outlet.
RVV
Runway Visibility Value.
HAT
Height Above Touchdown.
HIRL
High Intensity Runway Lights.
MIRL
Medium Intensity Runway Lights.
RL
Low Intensity Runway Lights.
MSD
Minimum Stabilization Distance.
ASDE-X
Airport Surface Detection Equipment.
APV
Approach (Procedure) with Vertical Guidance.
OCL
Obstruction Clearance Limit.
DCL
Autorizaciones Via Data Link.
OCA/H
Obstacle Clearance Altitude / Height.
MOC
Minimum Obstacle Clearance.
EMAS
Engineered Materials Arrestor System.
ETOPS
Extended-Range Twin-Engine Operation Performance Standards.
EFAS Frequency
Enroute Flight Advisory Service.
ACC
Area Control Center
NAT
North Atlantic Organized Track Structure.
RCO
Remote Communications Outlet.
NOTAM
Notice to Airmen.
OTC
Oceanic Transition Route.
TRA
Temporary Reserved Airspace.
ARTCC
Air Route Traffic Control Center.
OCA
Oceanic Control Area.
ATF
Aerodrome Traffic Frequency.
UNICOM
Universal Communications.
UIR
Upper Flight Information Region.
TWEB
Transcribed Weather Enroute Broadcast.
TSA
Temporary Segregated Area.
LDA
Localizer-type Directional Aid.
SDF
Simplified Directional Facility.
PRM
Precision Runway Monitor.
IATA
International Air Transport Association.
VDA
Vertical Descent Angle.
VDP
Visual Descent Point.
TACAN
Tactical Air Navigation Facility.
CDFA
Continuous Descent Final Approach.
PANS-OPS
Procedures for Air Navigation Services - Aircraft Operations.
TERPS
United States Standard for Terminal Instrument Procedures.
MIPS
Military Instrument Procedures Standardization.
SSV
Standard Service Volume.
TAA
Terminal Arrival Area / Terminal Area Altitude.
HPMA
High Performance Military Aircraft.
DL
Large Airplane.
TDZ
Touchdown Zone Lights.
RGL
Runway Guard Lights.
VDGS
Visual Docking Guide System.
FIC
Flight Information Center.
FSS
Flight Service Stations.
AFIS
Automatic Flight Information Service.
ACARS
Aircraft Communications Addressing and Reporting System.
TIBS
Telephone Information Briefing Service.