Related Clues:

• Plato's H
• Second letter before iota
• Airport schedule abbr.
• PC keyboard key
• Alphabetic character
• Frat letter, perhaps
• Computer key abbr
• Hellenic H
• Airport guess: Abbr.
• H, to Greeks
•     Traveler's request: Abbr.
• JFK posting
• Terminal abbr.
• O'Hare abbr.
• Sched. guess