As can be seen from the above introduction to the functions of various endoscope pore-finder systems, endoscope inspection technology enables inspectors to easily observe defects in the internal parts and structures of aircraft/engines that cannot be directly seen by the naked eye. Thus, endoscopy can be seen as an extension of the vision of the eye. However, the advantages of endoscopic inspection are not limited to this. It can send back the defects at the detection points with clear, high-resolution complete and color images, and capture, enhance, analyze and store them in the form of electronic images, so as to serve as a reference for the subsequent maintenance work of the inspectors. The grinding endoscope further combines the two functions of inspection and maintenance into one, greatly improving the use efficiency of endoscope system in aircraft maintenance. Therefore, it has great development potential in the future aircraft/engine inspection and maintenance.

The method USES optical fiber as a source of light and USES rigid or flexible endoscopy and photographic equipment to examine the internal surfaces of aircraft and engines through holes reserved for inspection. The application of the method of endoscope hole detector can reduce the unnecessary disassembling and assembling of aircraft and engines in the maintenance/repair, reduce the consumption of maintenance personnel, working hours and equipment, improve the efficiency and quality of aircraft maintenance, and reduce the maintenance cost.

Endoscopic system commonly used in aircraft to check the following parts: the engine (including air intake fan, compressor, turbine blades, combustion cylinder, gear box and fuel tank, etc.), endoscopic hole finder body parts (including the fuselage, the wings, landing gear system, vertical/horizontal tail, etc.), and the other cannot be observed directly by visual parts. The inspection items are mainly affected by external material damage, corrosion, vulcanization, wear, cracks and pollutants.