Fuzzy tactical project planning: Application to helicopter maintenance

Inspired by a helicopter maintenance planning problem, we study the integration of uncertainties into tactical multi-resource, multi-project planning (Rough Cut Capacity Planning). We model uncertainty by a fuzzy/possibilistic approach instead of a stochastic approach to be able to develop robust plans in situations where very limited data is available. We refer to the problem as the Fuzzy Rough Cut Capacity Problem (FR-CCP). We propose an adaptation of periodic workload to fuzziness, and develop a simulated annealing meta-heuristic to solve the capacity planning problem. We apply this method to the helicopter maintenance activity within the frame of a French industrial project called Helimaintenance.