Computers for managing aircraft engine thrust; Computers with dual monitors for managing aircraft control devices; Avionic instruments for measuring angle of attack of an aircraft in flight; Computers for warning of impending aircraft loss of lift and preventing loss of lift; Heater current monitor; Converters for translating aircraft angle of attack into different electrical formats; Avionic sensor systems, namely, processors for optimizing aircraft takeoff, climb and descent; Instruments for aligning aircraft angle-of-attack transducers, transmitters and sensors; Instruments used in aircraft automatic throttle systems including a processor for to prevent forces from the engine linkage from moving the throttles in the cockpit; Computers that warn of airflow downburst requiring corrective action; Automatic throttle control systems for aircraft; Electronic controllers for engaging and disengaging automatic throttle systems for aircraft; Autopower computer; Avionic sensor systems, namely, processors for automatically maintaining a particular airspeed or engine setting; Control and display screens used for automatic throttle system for aircraft; Avionic sensor systems, namely, processors for automatically maintaining a particular airspeed or engine setting; Avionic sensor systems, namely, processors for minimizing modification of throttle control assemblies in aircraft; Avionic sensor systems, namely, aircraft approach speed indicators; Avionic sensor systems, namely, aircraft speed control indicators; Avionic sensor systems, namely, instruments for indicating angle of attack of an aircraft in flight; Avionic sensor systems, namely, instruments for sensing angle of attack of an aircraft in flight; Avionic sensor systems, namely, processors for indicating angle of attack of an aircraft in flight; Ice detector; Optical ice detector; Sensors for detecting aircraft flap deflection angle; Computers for controlling aircraft performance; Avionic sensor systems, namely, processors for monitoring helicopter engine and rotor system and warning of maximum ratings for the engine, transmission or rotor system; Avionic sensor systems, namely, processors for monitoring and warning of aircraft operation near live transmission lines; Avionic sensor systems, namely, processors for converting antenna impedance; Avionic sensor systems, namely, processors for monitoring aircraft landing lights; Avionic sensor systems, namely, processors for optimizing aircraft performance in takeoffs, climbs, approaches and upset recovery; Avionic sensor systems, namely, processors for preventing aircraft stall; Avionic sensor systems, namely, processors for providing warning of impending aircraft stall; Horn used in aircraft for providing warning of impending aircraft stall; Horn assemblies for installation in aircraft cockpit