Answer:

ETD

Answer	Crossword Clue
ETD	Midway posting
ETD	Orly info
ETD	LAX listing

ETD	Takeoff hr. guesstimate
ETD	JFK posting
ETD	Guess in re: taking off
ETD	US Airways app info: Abbr.
ETD	Hartsfield Int'l listing
ETD	Airport abbr.
ETD	Takeoff hr., maybe
ETD	Leaving time (abbr.)

ETD	Logan info
ETD	Meaningless airport abbr.
ETD	Schedule abbr.
ETD	Logan abbr.
ETD	Flight sked info
ETD	Logan stat
ETD	Logan posting (abbr.)
ETD	JFK board info

ETD	JFK board notation
ETD	LAX letters
ETD	Airport-board abbr.
ETD	LAX board abbr.
ETD	When takeoff is scheduled to occur: Abbr.
ETD	Approx. takeoff info
ETD	Gate datum: Abbr.
ETD	JFK listing

ETD	JFK announcement
ETD	LAX approximation
ETD	SFO posting
ETD	U.S. Airways datum: Abbr.
ETD	LAX info
ETD	LAX posting
ETD	RR schedule no.
ETD	Airline agent's info, briefly

ETD	Going concern?: Abbr.
ETD	Expected taking-off hr.
ETD	JFK advisory
ETD	JFK datum
ETD	Timetable abbr.