HOW ACARS WORKS
DATA CONCERNING DEP/ARR TIMES, FUEL STATUS, FLIGHT RELATED PARAMETERS etc. AUTOMATICALLY COLLECTED OR ENTERED INTO SYSTEM, CONVERTED INTO A7 BIT CODE (WITH 8TH FOR PARITY) AND FORMED INTO BLOCKS OF 220 CHARACTERS MAX.
MESSAGE TRANSMITTED TO GROUND WHICH IS SENT TO ARINC/SITA CENTRAL SWITCH.