Related Clues:

• Kind of engine
• Bold competitor
• Last word in the Pledge of Allegiance
• Spout
• It's this or nothing!
• Runway model?
• With 43-Across, sane
• "--- That Jazz"
• American acquisition
• Boeing 747, e.g.
• One hundred percent
• Lustrous black
• See 90-Across
• Leave
• Widebody, e.g.