Beginning last month, buyers of any new Bombardier business jet can opt for a new cost-per-flight-hour maintenance support program. Under “Smart Maintenance Plus,” unscheduled and scheduled maintenance and certain unscheduled labor costs are covered for five years or 2,500 flight hours for Challengers and Global Expresses and five years or 2,250 flight hours for Learjets. Meanwhile, the Canadian OEM recently expanded its customer service hotline to 24/7.