Terminal Data Link System
(TDLS)
A system that provides Digital Automatic Terminal Information
Service (D-ATIS) both on a specified radio frequency and also, for
subscribers, in a text message via data link to the cockpit or to a
gate printer. TDLS also provides Pre-departure Clearances (PDC), at
selected airports, to subscribers, through a service provider, in
text to the cockpit or to a gate printer. In addition, TDLS will
emulate the Flight Data Input/Output (FDIO) information within the
control tower.