Facility and Fleet Maintenance Service Provider. PrimeFlight GSE Maintenance specializes in Airline and Aviation vehicle and equipment maintenance, including both preventative and unscheduled maintenance. PrimeFlight GSE services exceeds customers' performance expectations, and is delivering measurable results, including direct savings to customers. In addition to their performance focus. PrimeFlight GSE has also built strong shop safety and environmental programs. PrimeFlight GSE's Quality Management System is setting a new standard in traditional vendor GSE shops.