A unified approach is proposed for controllability analysis of a class of hybrid control systems, employing the controllability concept defined in [M. Tittus, B. Egardt, Control design for integrator hybrid systems, IEEE Transactions on Automatic Control 43 (4) (1998) 491–500; J.H. van Schuppen, A Sufficient Condition for Controllability of a Class of Hybrid Systems, in: LNCS, vol. 1386, Springer, 1998, pp. 374–383; Z. Yang, M. Verhaegen, Y.J. Wang, Z.J. Chen, Hybrid controllability of linear switched systems, in: Proceedings of 37th Control and Decision Conference, Tampa, FL, USA, December 1998, pp. 3920–3925]. The unified approach comprises global reachability analysis at the discrete event system level, local reachability analysis at the continuous-time dynamical system level and a merging of the results of these two methods using a discrete-path search algorithm. The proposed method is demonstrated useful for controllability analysis of complex hybrid control systems. The method is illustrated by analyzing the controllability of a linear switched system.