Page 27 - ITU-T Focus Group on Aviation Applications of Cloud Computing for Flight Data Monitoring - Use cases and requirements

ITU-T Focus Group on Aviation Applications of Cloud Computing for Flight Data Monitoring
Use cases and requirements

Special considerations • Aircraft navigational capabilities – Many aircraft do not have modern navigational equip-
ment. This may bring about the need to access traditional cockpit devices and calculate via
dead-reckoning methods the aircraft position in time and space. Accuracy and precision
will be affected. Alternatively a GPS (or other) antenna may need to be installed.
• Some aircraft do not have communication equipment possible of transferring any data to
the ground in real time. A communication device capable of transferring data to the ground
needs to be installed.
• Portable versus installed equipment and the supplemental type certificate (STC) consider-
ations associated with it.
• Satellite technologies for transmitting data in real time needs to be available globally (over
poles, land and water).
• Most authorities classify non-installed components as "transmitting portable electronic
devices" (T-PEDs) and as such require them to be switched off during the critical phases
of the flight.
• Access control to data because it can reveal sensitive operational and economical details of
the airlines.
Security mechanisms to avoid and detect misuse of the system or false data injection.
NOTE – Some aircraft acquisition systems may not read latitude and longitude coordinates.
Amount of data Depends on interval and data set. Flight tracking data is usually very small and can be sent
through short burst data (SBD) messages.
It is dependent on the position interval and amount of data in the string. Flight tracking data
file size is considered small and varies from approximately 10 bytes to 40 bytes and up, per
single position report that can get sent.
Transmission interval Best case real-time streaming data but maximum acceptable transmission interval is one
minute. Depends on existing technologies on board aircraft.
NOTE – As per IATA/ICAO ATTF recommendations of 15-minute normal tracking and one
minute abnormal tracking triggered by an event.
Transmission technologies Technologies are available as of today. Current technologies have sufficient capabilities for
tracking, sending alerts, and a few parameters.
Global transmission technologies are limited to satellite-based technologies with global cover-
age. However, current available market technologies have sufficient capabilities for retrieving
position and time data and either recording it or sending it via communication network channels.
Possible methods:
• Satellite (Globalstar, Inmarsat, Iridium, Thuraya, ViaSat).
• Terrestrial communication.

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