The ornamental design for the aircraft angle of attack indicator, as shown and described.
The file of this patent contains a least one drawing in which elements of the design include color. Elements embodied with color are represented by black and white cross-hatching for the colors green, yellow, red and white.
FIG. 1 is a front drawing of the aircraft angle of attack indicator in which an airfoil element represents an optimal landing approach angle of attack condition.
FIG. 2 is a front drawing of the aircraft angle of attack indicator in which the airfoil element, in an alternative position, indicates a sub-optimal landing approach angle of attack condition.
FIG. 3 is a front drawing of the aircraft angle of attack indicator in which the airfoil element, in an alternative position, indicates an excessive and cautionary landing approach angle of attack condition yet an acceptable flight angle of attack condition; and,
FIG. 4 is a front drawing of the aircraft angle of attack indicator in which the airfoil element, in an alternative position, indicates a stall angle of attack condition.