What does it mean to be financially responsible? It's a complex question with a complex answer, but at its core is a simple truth: To be financially responsible, you need to live within your means. And to live within your means, you must spend less than you make.
longitudinal axis. A straight line running fore and aft through the center of gravity. It is horizontal when the airplane is in the rigging position. The aircraft rolls about this axis. See axes.
Running from the nose to the tail of an aircraft is the longitudinal axis (see figure 5-2). This axis can be thought of as a skewer which runs the length of the fuselage, and movement around the longitudinal axis is called roll. The cause of movement or roll about the axis is the action of the ailerons.