Seems pretty clear: you get in an airplane, ride an airplane, mount an airplane, get into an airplane, guide an airplane, fly an airplane, drive an airplane, get your jollies or a buzz in an airplane, shoot in an airplane ... and usually steer with your joystick.
And then there's the maternal airplane that takes care of you, never lets you down, completes you, nurtures your every need, and carries you to heights you could never otherwise reach.
And aesthetically? Your airplane is the most beautiful thing you've ever seen, and you don't feel complete without her. Her sensuous curves, throaty purr, lulling hum, and sometimes passionate roar, gorgeous color, and that place where you feel so much at home, the ... cockpit ... no wonder it's called an ideal marriage of man and machine.
For most guys, airplanes are definitely feminine.