25-hour. Purchase a 25-hour Marquis Jet Card in the aircraft of your choice. Hours are accessible for 18 months. 7. Combo Card. Allows you to split the time of a 25-hour Marquis Jet Card between any two aircraft types of your choice, 12.5 hours for each.n fact, NetJets sets the standard for the industry. For instance, most recently in March, 2013 NetJets announced obtaining Level IV of the FAA's safety management system (SMS) pilot program. NetJets is the first and only fractional operator and fixed wing Part 135 operator to achieve this level of safety certification.