Related Clues:

• Howard Hughes, per a 2004 title
• Leaflet
• Advertisement delivered by hand
• Pamphlet
• Red Baron, e.g.
• Lindy, for one
• Crop duster, e.g.
• Earhart, for one
• Earhart or Lindbergh
• An ace is a good one
• One may be frequent
• SST, once
• One whose idea may be taking off
• Snoopy, in his dreams
• One on the wing