| 334511 |
Horizon situation instrumentation manufacturing |
| 334511 |
HUD (heads-up display) systems, aeronautical, manufacturing |
| 334511 |
Hydrophones manufacturing |
| 334511 |
Inertial navigation systems, aeronautical, manufacturing |
| 334511 |
Infrared homing systems, aeronautical, manufacturing |
| 334511 |
Instrument landing system instrumentation, airborne or airport, manufacturing |
| 334511 |
Instruments, aeronautical, manufacturing |
| 334511 |
Light reconnaissance and surveillance systems and equipment manufacturing |
| 334511 |
Machmeters manufacturing |
| 334511 |
Nautical systems and instruments manufacturing |