Last seen in:
Related Clues:
- Airport-board listings: Abbr.
- Takeoff guesses: Abbr.
- Brief guesses?
- Station info
- Platonic H's
- ''H'' look-alikes
- Weather may affect them: Abbr.
- LAX stats
- Certain Greek letters
- LAX schedule
- Zetas' followers
- Cockpit predictions
- Letters from Thessaly
- Delays set them back: Abbr.
- Airplane passengers may check them: Abbr.