Hi Don, This is the first time I have used AIFP to create an FP from scratch. I created the first day's flight of a weekly FP, as each leg was added, AIFP suggested a departure time which I accepted. At the end of that day, I saved and compiled and the results seemed fine. However, I then opened the file and started to add legs for the second day. For the first flight I set the departure time to 07:35 on Tuesday and it calculated an arrival time of 08:05 I then attempted to add a second leg, but the suggested departure time became 07:25 (ie. before the arrival, and in fact before the previous departure time ) Will AIFP not suggest reasonable departure times when adding legs to an existing FP?