Related Clues:
- Unstable leptons
- Heraclitus's H's
- TV's Magnum et al.
- Pilots' guesses, for short
- Letters from Thessaloniki
- Itinerary data: Abbr.
- Incoming-plane stats.
- LAX figures
- Sixth letters that look like they should be last
- When planes are due, for short
- Cockpit announcements: Abbr.
- Geometry symbols
- Nu followers
- Hellenic H's
- Some guesses, briefly