Multi-function control display unit. The MCDU is a piece of avionics equipment installed in the cockpit that monitors and displays information from other units and systems on the aircraft. The AFIRS 228 will integrate with and display messages on the existing MCDU.

Aircraft Communications Addressing and Reporting System: a digital datalink system for transmission of short, simple messages between aircraft and ground stations via radio or satellite.

Aircraft crew maintenance insurance: Also known as a wetlease. The company the airline is leasing from provides all services along with the aircraft.

Automated Flight Information Reporting System

Aircraft on Ground

Auxiliary Power Unit: Provides power to the aircraft when the engines are turned off. An example of when it is used is during boarding. When the plane is parked at the gate, the APU will power the lights and the air conditioning systems as one of its functions.

Air Traffic Control

Air Traffic Information System

Bureau d’Enquetes et d’Analyses. The French accident investigation committee.