No Aircraft
Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Situational Awareness
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Equipment / Tooling; Human Factors
Since [a few years ago]; I have used on occasion a company issued LED Black light; Inspecting Rolls Royce engine components and have been recently informed that No Engineering Variance was issued for the use of these Lights.
An Aircraft Maintenance Inspector reports using LED Ultraviolet type lights for Fluorescent Penetrant Inspection (FPI) of Rolls Royce Engine parts for more than two years; believing an Engineering Variance had been issued to allow the use of the LED lights.