Related Clues:

• Airport announcement
• Flying letters
• SFO posting
• Socratic "H"
• Part of a GP's schedule
• Socratic H
• JFK datum
• Aristotle's H
• 11-Across posting
• In-flight info: Abbr.
• JFK stat
• Guess at LAX
• Aristophanes' H
• Depot info
• H, in Hellas