Adam Aircraft named former Gulfstream and Cessna executive Joe Walker as its group president of commercial sales, as the Denver-based firm simultaneously develops the A500 centerline-thrust piston twin and A700 very light twinjet. Walker will “play a key role” in the expansion of the company’s marketing and customer support efforts, according to a company press release. The release states he was named “president of the company” but does not mention the status of John Knudsen, who, along with CEO Rick Adam, founded Adam Aircraft in 1998. Adam told AIN that Knudsen has for the past 18 months been “president of the government group,” focusing on sales efforts to government agencies. The company established Walker’s title 18 months ago, when Chris Finnoff joined Adam Aircraft (he has since left the company). Adam now expects certification of the A700 “early” next year, instead of the end of this year.