Aspen Jetride, the charter operator that acquired the assets of Aspen Executive Air (AEXJet) after AEXJet filed for bankruptcy protection last year, has ceased operations and surrendered its operating certificate, according to an FAA spokesman. Aspen Jetride, formerly known as Jetride, finalized the AEXJet acquisition in January. The company was originally known as Pinnacle Air until it purchased Columbus, Ohio-based Jetride in 2006.