When you're photographing from a helicopter, the standard approach is to exclude any element of the aircraft, to capture pixels only of the subject — the scene, the structure, the aircraft — that you are there to capture.
Sometimes, though, take the non-standard approach and also show some of the aircraft you're in. Like this shot, above, from a police helicopter over an area they sometimes fly into for search-and-rescue missions. By including some of the aircraft, the scene gets not just a sense of scale, but a sense of mission (you're in a helicopter and there's a searchlight, so, search-and-rescue, right?) and it adds another layer of interest to the composition.
This police helicopter is practicing placing a load onto a predetermined spot. In this case the load is a substantial hunk of concrete, painted pink, and the spot is a tire lying out in the desert. I also shot this exercise from the ground but, here, with my camera shoved down under the fuselage at the end of my arm, I've put everything — aircraft, cable, load, tire, aircraft's shadow, terrain — into the frame from an unexpected perspective.
Next we gaze over the shoulders of the crew of this offshore helo formed up with a utility aircraft. My target (another offshore aircraft) was not yet in position, but this composition shows the crew doing what they should be doing — watching the other aircraft and keeping a prescribed distance.
Finally, some double-vision. Not only do we see outside this EMS aircraft through the windscreen, etc., we see the view that the pilot sees, reflected in his visor — the expanse of terrain and clouds and sky.
Note that each of these images was created using a very wide-angle lens, equipment you'll also need to use if you want to capture the aircraft and its environs. The payoff is a more interesting perspective on the equipment, the missions, and the people.