Kirbert's Airport Letterboxes
      
    
          These are letterboxes that have been placed within
            walking distance of General Aviation airports so that
            letterboxers can hunt them by Cessna.  All boxes can be
            found by land as well.  Some of these boxes were
            planted by Kirbert, but
        most were planted by others using a Kirbert stamp.
        
        You can find these boxes by logging on to AtlasQuest.com and
        conducting a search for traditional letterboxes using the
        keyword "airport".  This will pull up a select few that
        don't contain Kirbert stamps -- people have been known to plant
        their own stamps at airports -- but these may still be
        useful in planning your flying trip.  If you really want to
        search for Kirbert stamps only, just enter "Kirbert" in the
        Carver field.
        
        Remember that, when stamping with an image of an aircraft, you
        don't necessarily have to stamp with any particular
        orientation.  You can tilt the stamp one way so the plane
        looks like it's climbing, or the other way so it looks like it's
        diving.  You can make it fly upside-down if you wish. 
        Some fixed-gear aircraft look like they're flying when stamped
        level, but look like they're sitting on the tarmac when stamped
        slightly nose-up.  You can stamp a whole squadron of planes
        flying in formation if you want to take up space in your log
        book!
        
        Just for grins, here's a link to the North Carolina Notices to
        Airmen (NOTAMS) site:
        
        Stamp
          NOTAMS
        
        This apparently has nothing to do with letterboxing, but
        nonetheless involves custom-made rubber
        stamp images that may be collected while visiting airports.