Nextant Aerospace, of Richmond Heights, Ohio, named Constant Aviation, located at the Cleveland Hopkins International Airport, as the first authorized dealer for the Pro Line 21 Flight Deck Upgrade for the Beechjet 400A/XP. Installation slots are now being reserved for the fourth quarter of this year, the company said. Baseline pricing for the Beechjet 400A/XP Pro Line 21 Upgrade is $390,000. Additional options are available for four displays, IFIS (Integrated Flight Information System) and XM Satellite NEXRAD Radar.