Pilots fly passenger aircraft according to a pre-arranged flight plan on short or long journeys. They are responsible for the safety of everyone on board, and keep in constant contact with the ground-based air control in the various zones over which they pass.They should be continually aware of the aircraft’s performance, the weather conditions, other flying traffic and the remaining fuel level.They must also be ready to take decisions in emergencies, such as acute illness on board, and other situations that would require the possibility of an unscheduled landing. A report must be filled in at the end of the flight, detailing any technical problems and all other relevant details of note that occurred.