Avionics, namely, flight instruments, in the nature of altimeters, gyrocompasses, tachometers, gyroscopes, gyrometers, electronic display interfaces, telemeters, electronic data recorders, and devices for collecting, storing, analyzing, and displaying flight information including but not limited to attitude, altitude, airspeed, heading, turn coordination, temperature, and engine status; Radar apparatuses for the detection of weather and prevention of collisions; radios for communication and n...