Synonyms for acars or Related words with acars
Examples of "acars"
In March 2014,
messages and Doppler analysis of
satellite communication data played a very significant role in efforts to trace Malaysia Airlines Flight 370 to an approximate location. While the primary
system on board MH370 had been switched off, a second
system called Classic Aero was active as long as the plane was powered up, and kept trying to establish a connection to an Inmarsat satellite every hour.
Problems are sent to the airline operations center through the
interfaces with interactive display units in the cockpit, which flight crews can use to send and receive technical messages and reports to or from ground stations, such as a request for weather information or clearances or the status of connecting flights. The response from the ground station is received on the aircraft via
as well. Each airline customizes
to this role to suit its needs.
FlightAware integrates with all major aircraft datalink services using
or similar protocols via SATCOM or VDL including:
equipment consists of end systems with a router, which routes messages through the air-ground subnetwork.
Automated ping messages are used to test an aircraft's connection with the communication station. In the event that the aircraft
unit has been silent for longer than a preset time interval, the ground station can ping the aircraft (directly or via satellite). A ping response indicates a healthy
The data is then preprocessed before linking them down to the ground either via VHF communication (
was added to the NOAA Observing System Architecture. Thus commercial aircraft can act as weather data providers for weather agencies to use in their forecast models, sending meteorological observations like winds and temperatures over the
network. NOAA provides real-time weather maps.
In the wake of the crash of Air France Flight 447 in 2009, there was discussion about making
an "online-black-box" to reduce the effects of the loss of a flight recorder. However no changes were made to the
(; an acronym for Aircraft Communications Addressing and Reporting System) is a digital datalink system for transmission of short messages between aircraft and ground stations via airband radio or satellite. The protocol was designed by ARINC and deployed in 1978, using the Telex format. More
radio stations were added subsequently by SITA.
systems were extended over the years to support aircraft with digital data bus interfaces, flight management systems, and printers.
as a term refers to the complete air and ground system, consisting of equipment on board, equipment on the ground, and a service provider.
In an effort to reduce crew workload and improve data integrity, the engineering department at ARINC introduced the
system in July 1978, as essentially an automated time clock system. Teledyne Controls produced the avionics and the launch customer was Piedmont Airlines. The original expansion of the abbreviation was "Arinc Communications Addressing and Reporting System". Later, it was changed to "Aircraft Communications, Addressing and Reporting System". The original avionics standard was ARINC 597, which defined an
Management Unit consisting of discrete inputs for the doors, parking brake and weight on wheels sensors to automatically determine the flight phase and generate and send as telex messages. It also contained a MSK modem used to transmit the reports over existing VHF voice radios. Global standards for
were prepared by the Airlines Electronic Engineering Committee (AEEC). The first day of ARINC operations saw about 4,000 transactions, but
did not experience widespread use by the major airlines until the 1980s.
Some devices are avionics components like
and ADS-B. In these cases the receiving and transmitting antenna are usually located outside of the airframe.
Air France's A330s are equipped with a communications system, Aircraft Communication Addressing and Reporting System (
), which enables them to transmit data messages via VHF or satellite.
can be used by the aircraft's on-board computers to send messages automatically, and F-GZCP transmitted a position report approximately every ten minutes. Its final position report at 02:10:34 gave the aircraft's coordinates as .
equipment on the aircraft is linked to that on the ground by the datalink service provider. Because the
network is modeled after the point-to-point telex network, all messages come to a central processing location to be routed. ARINC and SITA are the two primary service providers, with smaller operations from others in some areas. Some areas have multiple service providers.
On 11 March, "New Scientist" reported that, prior to the aircraft's disappearance, two reports using the Aircraft Communications Addressing and Reporting System (
) protocol had been automatically sent to engine manufacturer Rolls-Royce's monitoring centre in the United Kingdom.
A group or the entirety of applications used for communication of an aircraft with its airline or service partner pendants on the ground. An AOC application was traditionally hosted on an
MU or CMU.
messages may be sent using a choice of communication methods, such as VHF or HF, either direct to ground or via satellite, using minimum-shift keying (MSK) modulation.
A major function of
is to automatically detect and report the start of each major flight phase, called OOOI events in the industry (out of the gate, off the ground, on the ground, and into the gate). These OOOI events are detected using input from aircraft sensors mounted on doors, parking brakes, and struts. At the start of each flight phase, an
message is transmitted to the ground describing the flight phase, the time at which it occurred, and other related information such as the amount of fuel on board or the flight origin and destination. These messages are used to track the status of aircraft and crews.
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