Endoscope borescope instrument as only a can not decompose in line maintenance and understand its internal condition of the engine and check method, endoscopic hole finder to check for safety and efficiency has the important significance and value two aspects: one is intuitive and simple accurately, and can be found that damage to the engine internal components as soon as possible, will greatly benefit the safety hidden trouble excluded from infancy; Second, endoscopy avoids the cost of decommissioning engines and corresponding engine dismantling, transportation and other costs, as well as unnecessary aircraft shutdown losses, and saves maintenance costs.

At present, Remote Visual Inspection (RVI), or endoscopic Inspection technology, has been used to inspect the interior of aircraft and engines. 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 endoscope inspection method can reduce unnecessary disassembly and assembly of aircraft and engines during 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.

The rigid endoscope pore-finder USES a series of lenses mounted inside a straight stainless steel tube or a bunch of quartz fibers inside a thin steel tube to transmit images taken during the inspection. The steel pipe is also fitted with optical fibers that channel light from the source to checkpoints. To facilitate inspection from all angles, the inspection lens of rigid endoscope is usually movable or replaceable. Some rigid endoscopes also have Scanning Control capabilities. Scanning can be performed quickly from a larger perspective without the need to shift the eye position or transfer optical fiber through a Scanning direction or an adjustable prism.