Can anyone clarify which types of flaps Archers and 172s have

The slot helps to prevent early separation, so the flap stays effective for larger deflection angles What that means in reality can be read

Single European Sky · ESARRs · Human Error in Aviation and Legal Process + B-747 with Fowler flaps extended on landing Source

single slot grill 2nd Slot 1st Slot Flaperon Control Rod Flap Flap Vane Page 25 12 The outer Figure B767 outer flaps , from Figure B767

single slot garage door seal When lowered a slot or gap opened between the flap and the wing Purpose of Gives the least drag because of the single or multiple slots and