It's actually 7 hours of flight time for the CFI 15-Day and they add 3 more hours for the CFII for a total of 10 hours for the 30-Day guys. Yes almost everybody just needed 4 flights to get there sign off with a 2 year CFI. At 4 flights you are brushing up on 7 hours of flight time. I did three flights because I am doing my sign off back home and I still had enough money in my account for another 2 hours of flight time.