摘要： Driven by today’s typical “power by the hour” type aftermarket support contracts (e.g. Corporate Care and Total Care) the demands for continuous operation of aircraft engines have increased significantly. For this reason, any disruption caused by heavy maintenance needs to be avoided. Where needed, repair operations should be as time, cost and material efficient as possible. However, service disruptions will still occur and wherever possible, the resulting maintenance intervention activities should take place either “on-wing” or “near-wing”. Consequently, it is the intention of Rolls-Royce to introduce more and more in-situ and minimal invasive maintenance capabilities, such as endoscopic laser material deposition (LMD), for the repair of structural engine components. This article describes the challenges of the minimal invasive LMD process inside cavities and the continued development requirements over and above today’s state-of-the-art repair capability. It also provides further insight concerning the ongoing development of equipment that combines viewing and LMD capability and an outlook on the application of the developed technology.