Patent ID: 7794395

Claim:
A method of detecting defects in a turbojet part by endoscopy comprising: providing a rod with a first diameter and including at least one pipe, and a first endoscope including a visible light guide received in the rod and a first image transmission assembly received in the rod, the first endoscope being free of any means for producing ultraviolet light; providing a second endoscope with a second diameter, the second endoscope being free of any pipes configured to feed gas or fluid and free of any means for producing visible light, the second endoscope including an ultraviolet light guide and a second image transmission assembly; inserting the rod through an orifice in a wall of the turbojet; after inserting the rod through the orifice and while the first endoscope is disposed within the orifice, exposing the turbojet part to visible light transmitted via the visible light guide and produced by a dedicated visible light source, and applying a penetration test substance to a surface of the turbojet part by sending the penetration test substance through the at least one pipe; withdrawing the rod from the orifice after applying the penetration test substance to the turbojet part; inserting the second endoscope through the orifice after withdrawing the rod; exposing the turbojet part to ultraviolet light with the ultraviolet light guide while the second endoscope is in the orifice; and viewing the turbojet part exposed to ultraviolet light through the second image transmission assembly while the second endoscope is in the orifice.