The results of model experiments on recording the spectral characteristics of the emission glow of residual amounts of a substance on a blade of an aircraft turbojet engine after the mechanical impact of a foreign object are presented. The spectra were measured by laser-induced breakdown spectroscopy, which made it possible to distinguish the emission lines of the substance against the spectrum of the blade material. This nondestructive testing allows quick diagnosis of the blades at the site of the aircraft inspection before a flight and draw conclusions about possible destruction of the fuselage and the criticality of the damage.