Rick Durden wrote:

Cessna switched to 30 degrees of flap deflection maximum on a heavier
model of the 172 because of rate of climb requirements during a balked
landing under the FARs.

That's also the reason the 160hp Maule has only 40 degrees of flaps while more
powerful ones have 44 degrees. Even at that, max gross is 200 pounds less than the
180hp version.

George Patterson
I childproofed my house, but they *still* get in.