The status of the aircraft affects to the flight plan. For example, an Airbus A340 have 4 hydraulic pumps, and one of them loses, so such aircraft is not allowed for the flight. Otherwise, the flight dispatcher still calculates that the airport has runway which is too short or in construct or not, and the aircraft has potentiality to climb. It must use GWC (Gross Weight Chart) or TOW (Takeoff Weight Chart) and how to climb safely. In case of some aircraft does not set equipment for flying in RVSM Airspace. It cannot be planned for flying in RVSM Airspace.