- Acceleration indicators and systems components, aerospace (6)
- Aircraft flight instruments (4)
- Airspeed instrumentation (aeronautical instruments) (1)
- Artificial horizon instrumentation (1)
- Electronic detection systems (aeronautical) (2)
- Flight recorders (1)
- Glide slope indicators (2)
- Gyro gimbals (1)
- Heads-up display systems (HUD), aeronautical (2)
- Infrared object detection equipment (3)
- Instrument landing systems (ILS), airborne or ground (4)
- Aircraft control systems, electronic (16)
- Automatic pilots, aircraft (18)
- Navigational systems and instruments (15)
- Antennas, radar or communications (18)
- Compasses and accessories (2)
- Control receivers (3)
- Radar systems and equipment (12)
- Sonar systems and equipment (12)
- Space vehicle guidance systems and equipment (3)
- Nautical instruments (4)
- Fathometers (1)
- Sextants (3)
- Missile guidance systems and equipment (4)
- Warfare counter-measure equipment (1)
- Detection apparatus: electronic/magnetic field, light/heat (36)
- Electronic field detection apparatus (aeronautical) (1)
- Distance measuring equipment (1)
- Light or heat emission operating apparatus (3)
- Radio magnetic instrumentation (2)
