 The checks performed during a run-up vary with the type of aircraft and (to a lesser extent) with the operating rules under which the flight is being conducted, "e.g.," instrument flight rules, visual flight rules, operation as a commercial carrier or private pilot, and so on.The term "run-up" alludes to engine checks that involve temporarily advancing the throttles to ensure that engines are capable of producing take-off thrust, although not all run-up procedures involve such checks.A run-up area is a location at an airport where pilots can perform run-up checks of their aircraft.