A fleet maintenance officer (FMO) is a position in the aviation industry that is responsible for the overall health and performance of an aircrafts mechanical and electrical systems. The FMO ensures that all aircraft systems are maintained in a state of readiness to fly, and that any required repairs or modifications are carried out in a timely and efficient manner. The term fleet maintenance officer can also be used to describe persons are responsible for the safe and efficient operation of a company's vehicles. They inspect, maintain, and repair company vehicles, as well as providing training to employees who use company vehicles. Fleet maintenance officers also keep track of company vehicle inventories and ensure that all vehicles are in compliance with company safety policies.