The ACARS files are utility programs and info about ACARS,
a kind of 'packet-radio' for airlines which can be received
on 131.725 MHz and decoded for instance with the Lowe Airmaster.

ACARINTF.ZIP - Info about the ACARS interface
ACARSHLP.ZIP - ACASORT v1.10 Message sorting and decoding
               program for ACARS log-files
ACARSINF.ZIP - Several TXT files with info about ACARS