MediaBuyerPlanner: Doubledown Media will nearly double in size with its purchase of Private Air, a magazine for private plane owners.

Private Air has a controlled, qualified circ of 77,000, writes Mediaweek. The publisher of magazines for the corporate wealthy will also launch a fourth title, Corporate Leader, in fall 2007.

Doubledown Media also owns Trader Monthly and Dealmaker, each of which are bimonthlies with circulations of 100,000.