Airborne Collision Avoidance System
Automatic Dependent Surveillance - Broadcast
ADS-B OUT and ADS-B IN
ADS-B OUT refers to information being broadcast out by the aircraft’s transponder. ADS-B IN refers to information received by the transponder.
A GNSS position source and a compatible Mode S extender squitter 1090Mhz ADS-B OUT transponder.
Approved Model List Supplemental type certificate, which allows a single STC to address several different type certificates. It provides a more efficient process compared to multiple approvals of, for example, installations that are largely similar or identical for several different aircraft models.
Air Traffic Control
Air Traffic Management
Civil Aviation Authority
Civil Aviation Rule
Distance measuring equipment is a transponder-based radio navigation technology that measures slant range distance by timing the propagation delay of VHF or UHF radio signals.
Flight Information Region
Flight Information Service
Flight Level 245 (FL 245)
Flight Level 245 (24,500 feet) is the boundary between upper and lower
airspace in the New Zealand domestic FIR.
Flight Management System
Future Surveillance Implementation Working Group
General Aviation aircraft that operate under Visual Flight Rules
Globalnaya navigatsionnaya sputnikovaya sistema - GLONASS is the Russian Global Navigation Satellite System.
Global Navigation Satellite System, a general term referring to a navigation satellite system including the US GPS network, the Chinese BeiDou, Russian GLONASS and European Galileo systems.
Global Positioning System - one type of GNSS, owned and operated by the US Government. GPS is the only GNSS currently providing coverage to New Zealand.
International Civil Aviation Organization
Instrument Flight Rules
Multilateration: is a ground-based surveillance system. A network of ground stations interrogate and receive replies from aircraft SSR transponders.
Mode A/C transponder
Mode A/C refers to transponders currently mandated in parts of New Zealand airspace. Mode A provides an aircraft identity code; Mode C provides altitude in 100 ft increments.
Mode S transponder
Mode S(elect) transponders are the next generation on from Mode A/C. Mode S provides a much larger number of identification codes, altitude in 25 ft increments, and a range of Downlink Airborne Parameters (DAPs) depending on the aircraft avionics and surveillance system characteristics.
New Southern Sky
Original Equipment Manufacturer
Performance Based Navigation
Primary surveillance radar. PSR is a non-co-operative surveillance system: it does not rely on information from the aircraft.
Receiver autonomous integrity monitoring. RAIM is a technology developed to assess the integrity of global positioning system (GPS) signals in a GPS receiver system. It is of special importance in safety-critical GPS applications, such as in aviation or marine navigation.
Satellite-based augmentation system. SBAS measures small variations in the GPS signals and provides regular corrections to aircraft receivers within the specific geographic service areas covered by the system’s ground stations. New Zealand is not currently covered by an SBAS service area.
Secondary surveillance radar, SSR is a co-operative surveillance system, meaning that it relies on a response from an aircraft transponder.
Traffic Collision Avoidance System or Traffic Alert and Collision Avoidance System
Traffic Information Service
Technical Service Order, issued by the FAA and provides the performance parameters for equipment certification.
Universal Access Transceiver
VHF Omni Directional Radio Range
Wide area augmentation system – see SBAS.