In this contribution, the uncertain dynamical behavior of a propfan-blade is investigated. The blade consists of a hollow cross-section with fiber-reinforced composite material. First, the structural response of a detailed finite element model (shell model) of the blade is compared with a simple rigid body model. Then, the uncertainty of material and load parameters is quantified by fuzzy numbers and fuzzy probability based random fields in the framework of polymorphic uncertainty modeling. A surrogate model is generated to replace the time-consuming stochastic simulation within the fuzzy stochastic analysis. Finally, the time-variant sensitivities of the fuzzy parameters are evaluated for each time-step.