Abstract: To assure takeoff controllability of aircraft of the type having movably mounted stabilizers, a plurality of different stabilizer position ranges are established, any one of which may be selected by a range selector switch operated by the pilot. Proper pilot selection of an available stabilizer range depends on the gross weight and the location of the center of gravity of the loaded aircraft. This dependency is automatically accounted for by sensing the amount of load on the nose landing gear, by means of a pressure sensitive switch associated with the nose gear shock strut. The condition of the pressure switch indicates the proper range of stabilizer positions as a function of the gross weight and location of the aircraft's center of gravity. Circuit means compare the condition of the pressure switch with the position of the range selector switch and a range warning indicator is actuated if the nose loading requires a different stabilizer range.