What does TDY stand for?

Air Today, Inc. - ICAO designator (FAAC)

Tadyawan - Language code (ETLW)

Task Dictionary (SAUS)

Teleciyne, Inc. (SAUS)

Teledyne, Inc. - NYSE symbol (SPSG)

Temporary Duty

Time Delay to Y (SAUS)

Today (SAUS)

Trading Bay, AK - Location identifier - FAA (FAAL)