GTAA - Greater Toronto Airport Authority
HF - High Frequency
IACA - International Air Carrier Association
IAPA - International Airline Passengers Association
IATA - International Air Transport Association
IATAN - International Airlines Travel Agent Network (wholly owned subsidiary of IATA)
IATF - International Airline Training Fund
ICAO - International Civil Aviation Organisation
ICCS - IATA Currency Clearance Service
ICH - IATA Clearing House
IFALPA - International Federation of Airline Pilots Associations
IFATCA - International Federation of Air Traffic Controllers' Associations
IFSP - In-flight security personnel
ILS - Instrument Landing System
IOSA - IATA Operational Safety Audit
ISO - International Standards Organization
ITF - International Transport Workers Federation
ITU - International Telecommunication Union
JAA - Joint Aviation Authorities (European)
JAG - Japan Action Group JAR - Joint Aviation Requirements
LACAC - Latin American Civil Aviation Commission
MANPADS - Man Portable Air Defense Systems
MITA - Multilateral Interline Traffic Agreements
MLS - Microwave Landing System
MOT - Ministry of Transport (various countries)
OECD - Organization for Economic Co-operation and Development
PAAST - Pan-American Aviation Safety Team
PAConf - Passenger Agency Conference
PATA - Pacific Asia Travel Association
PNR - Passenger Name Record
PRM - Persons with Reduced Mobility
RFID - Radio Frequency Identification
RNAV - Area Navigation
RNP - Required Navigation Performance
RPK - Revenue Passenger Kilometers
RSVM - Reduced Vertical Separation Minima
RTKM - Revenue Tonne Kilometre
SATCOM - Satellite Communications System
SMS - Safety Management Systems
SEMS - Security Management Systems
SES - Single European Sky
StB - Simplifying the Business
SITA - Société Internationale de Télécommunications Aéronautiques
SPT - Simplifying Passenger Travel
SST - Super Sonic Transport
STEADES - Safety Trend Evaluation, Analysis & Data Exchange System
STB - Simplifying the Business
TCAA - Transatlantic Common Aviation Area
TCAS - Traffic Collision Avoidance System (US-FAA)
TSA - Transportation Security Administration
TWIC - Transport Worker ID Card
TWOV - Transit Without Visa
UATP - Universal Air Travel Plan
UFTAA - Universal Federation of Travel Agents' Associations
VAT - Value-added Tax
VHF - Very High Frequency
VSAT - Vectoral Satellite
WTO - World Tourism Organization
WTO-OMC - World Trade Organization (formerly GATT)
WTTC - World Travel and Tourism Council