Abstract: Disclosed is a method and apparatus for determining a capability of a vehicle, for example, an aircraft. The method comprises: acquiring, by one or more processors, from the vehicle, fault data that indicates the presence or absence of a fault on the vehicle; acquiring, by the one or more processors, a mission model specifying a mission to be performed; and processing, by the one or more processors, the fault data to determine an indication indicative of a capability of the vehicle to perform the mission specified by the mission model. The fault data may include one or more Fault Indication Codes (FICs) that are activated in response to the presence of respective faults in the vehicle. The one or more processors may, using the determined indications, determine a mission or maintenance schedule for the vehicle.