North Atlantic Guidance Material i
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GLOSSARY OF TERMS AAD Assigned Altitude Deviation
ACAS Airborne Collision Avoidance System
ACC Area Control Centre
ADF Automatic Direction Finding
AFTN Aeronautical Fixed Telecommunications Network
AGL
Above Ground Level AIC Aeronautical Information Circular
AIP Aeronautical Information Publication
AKD Altitude Keeping Device
AMSS Aeronautical Mobile Satellite Services
ASE
Altimetry System Error
ATA Actual Time of Arrival
ATC Air Traffic Control ATM Air Traffic Management ATS Air Traffic Services
CDU Control Display Unit
CFL
Cleared Flight Level CMA Central Monitoring Agency CNS Communication, Navigation and Surveillance
COSPAS Space System for the Search of Vessels in Distress
CTA Control Area CTR Control Zone
DCPC Direct Controller Pilot Communications
DME Distance Measuring Equipment
ELT Emergency Locator Transmitter ETA Estimated Time of Arrival EUR European FAA Federal Aviation Administration
FIC Flight Information Centre FIR Flight Information Region FL Flight Level
FMCS Flight Management Computer System
FMS Flight Management System FTE Flight Technical Error
GLONASS Global Orbiting Navigation Satellite System
GMS Global Positioning System Monitoring System
GMU Global Positioning System Monitoring Unit
GNE Gross Navigation Error
GNSS Global Navigation Satellite System GPS Global Positioning System HF High Frequency
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HMU
Height Monitoring Unit ICAO International Civil Aviation Organisation
IFR Instrument Flight Rules
IGA International General Aviation INS Inertial Navigation System IR Instrument Rating IRS Inertial Reference System ISS Inertial Sensor System
JAA Joint Aviation Authorities
LIM/NAT RAN Limited North Atlantic Regional Air Navigation Meeting
LORAN Long Range Air Navigation
LRNS Long Range Navigation System
LUT Local User Terminal
MASPS Minimum Aircraft System
Performance Specification MCC Mission Control Centre MET Meteorological MHz Megahertz
MNPS Minimum Navigation Performance Specifications
MNT Mach Number Technique
MSL Mean Sea Level
MTT Minimum Time Track NAT North Atlantic
NATS National Air Traffic Services Limited NAT SPG North Atlantic Systems Planning Group
NDB Non Directional Beacon
NOTAM Notice to Airmen
OAC
Oceanic Area Control Centre OCA Oceanic Control Area
OTS Organized Track System
PEC Position Error Correction
PPL Private Pilot’s Licence
PTS Polar Track Structure RA Resolution Advisory
RGCSP Review of the General Concept of Separation Panel
RNP Required Navigation Performance
RVSM Reduced Vertical Separation Minimum
SAR
Search and Rescue SARPS Standards and Recommended Practices
SARSAT Search and Rescue Satellite-Aided Tracking
SATCOM Satellite Communications
SIGMET Significant Meteorological Weather
SOTA Shannon Oceanic Transition Area
SSEC Static Source Error Connection
SSB Single
Side-band
SSR Secondary Surveillance Radar
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SST Supersonic Transport
TCAS Traffic Collision Avoidance System
TGL Temporary Guidance Leaflet
TLS Target Level of Safety
TMA Terminal Manoeuvring Area
TSO Technical Standard Order
TVE Total Vertical Error UTC Coordinated Universal Time
VFR Visual Flight Rules VHF Very High Frequency
VOR Very High Frequency
Omni-directional Range VSM Vertical Separation Minimum
WATRS West Atlantic Route System
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