Airplane announcement, for short (3 letters)

{ Answer }

ETA

{ Related Clues }

H
Airline abbr.
Airport abbr.
Fraternity letter
Greek H
Greek letter
Greek vowel
Relative of alpha
Schedule abbr.
Schedule letters
Sked abbr.
Zeta chaser
Zeta's follower
Between zeta and theta
In-flight info, for short
H in the Greek alphabet
Seventh in a series of 24
Traveler's info, for short
It's two after epsilon
I ___ Pi (playful fraternity name)

{ Tags }

abbr, after, airport, announcement, eta, flight, follower, fraternity, greek, h, info, jfk, lax, letter, letters, pilots, posting, seventh, short, vowel, zeta

{ Notes }

The answer ETA is very common and appears about once every 24.5 puzzles.

{ Definition }

ETA as a noun:

1. (Basque Homeland and Freedom, Basque Fatherland and Liberty, Euskadi ta Askatasuna, ETA) = a terrorist organization organized in 1959 by student activists who were dissatisfied with the moderate nationalism of the traditional Basque party; want to create on independent homeland in Spain's western Pyrenees; "in 1968 ETA launched a campaign of political assassinations of government officials"

2. the 7th letter of the Greek alphabet