All flaps change the cord line of the wing, not increase it. Fowler's actually increase the area of the wing, as well as change the cord line. I'm a flight engineer on P-3 Orions and they definitely have Fowler's. The flaps move aft first, then deflect down. My goal, is someday to build a scale P-3. I figure I'll have to scratch build it, but I'm looking to build existing models with different items that I'll need to build the P-3, such as; Retracts, Fowler Flaps, multi-engine, etc. The only thing I haven't been able to find yet is a kit with Fowler's. Thank's for all the input.