Abstract: Digitization error detection is one of the key technologies to insure the assembling
quality of wing unit. A surface shape error detection method is given to get the wing surface
quality data accurately. A fast algorithm has been studied to calculate the wing surface error,
corresponding detection program is developed. The results show that the surface error of the wing
surface shape can be acquired quickly and correctly, and a color drawing is displayed visually.

Key words: wing surface shape, detection, surface error, coordinate registration