Gender of Aircraft
If an aircraft is given a gender, it is normally female, along the same lines as for ships. The anthropomorphism of aircraft is rarer than for ships, but still very common especially in the military, where bombers and even fighter aircraft have traditionally been given a name and "nose art" for good luck. The bigger the plane, the more likely it is to be anthropomorphized.
The most common way to refer to an airplane is it. If one were to decide to infer gender onto an aircraft, female would be the obvious choice for airships, and by extension probably the logical one for smaller aircraft like planes. However, I would advise against doing any such silly thing.
Why Are Airplanes Called She?
Ships were referred to as "she". Airplanes, once upon a time, were thought of as ships of the air. So it’s not a leap to see planes as “she’s.” Another tradition is to consider ships as female. Although it may sound strange referring to an inanimate object as ‘she’, this tradition relates to the idea of a guiding and protecting female figure.
Masculine or Feminine Nature of Airplanes
Airplanes are very powerful machines that can travel at high speeds. They are also very graceful creatures that can soar easily. Airplanes are both masculine and feminine depending on how you look at them.
If you focus on their strength, then they appear masculine. If you focus on grace, then feminine. The Boeing 757 received first orders in August 1978. The prototype completed its first flight in February 1982.