The fuselage serves as the primary structural core of an airplane or helicopter. It provides the attachment points for the wings, tail section, and landing gear, while maintaining a pressurized and climate-controlled environment for occupants. Engineers design it to withstand the immense bending and torsional stresses of flight, as well as the cyclic stress of pressurization.
Heard on the job
The inspection revealed a hairline crack in the forward fuselage near the cargo door.