C 172 = Fowler flap
PA 28 = plain slotted flap
C172 has a slotted Flap
PA28 has a plain flap (I have never seen a slotted one)
Discussion Point:
I have been told that a fowler flap means that the surface area changes over the
full range of flap settings and that C172 flaps should not, therefore, be called fowler flaps as the area only changes over the first 10deg of deployment.
I like to say they are slotted flaps with a 'fowler action' over the first 10deg.
Any comments ?