These are instances proposed in P. Fattahi, M. Mehrabad, and F. Jolai. Mathematical modeling and heuristic approaches to flexible job shop scheduling problems. Journal of Intelligent Manufacturing, 18:331-342, 2007, for the Flexible Job-Shop Scheduling Problem. The format is different from the original. In our format, the only information needed is about the operations of the jobs, precedence relations and machines. Let N be the total number of operations of all jobs, A be the number of precedence relations and K be the number of machines. The operations are labeled from 0 to N-1 and the machines are labeled from 0 to K-1. The description of each instance starts with a line that contains the numbers N, A and K. Each of the next A lines contains two distinct operations, U and V, indicating that U must be processed before V. Finally, the last N lines describe the operations: the (A + 2)-th line corresponds to operation 0, the (A + 3)-th line corresponds to operation 1 and so on. The description of operations begins with the number M of machines that can process the operation followed by M pairs of numbers indicating, respectively, the label of a machine and the time that machine takes to process the operation. Any line starting with a # is a comment.