Many authors claim that LEAN principles can be applied successfully in any industry. Although LEAN success stories are visible throughout the automotive sector and even in larger aerospace Maintenance, Repair & Overhaul (MRO) facilities, the implementation in smaller MRO organizations seem to be lagging behind. This research describes a study to translate LEAN principles and tools into a small MRO organization. A LEAN pilot project has been initiated within JetSupport B.V.'s work preparation department. Initial results show that large benefits in throughput can be generated. Additional recommendations are given that include mapping of the total value stream of the base maintenance process to prevent departmental sub optimization.