Dodgepot, yes, that gets to the answer but, being ultra-picky, it's not quite the intended strict Ximenean construction of the wordplay, in which the first three letters just mean "attention" as per the Chambers entry. The "of" then goes with "flyer" to get the adjectival meaning "of flyer" - which Chambers shows in the same entry as the noun. Listener eds are very hot on this!