Most pointedly they lost spoilers and flaps; they really only had a few
instruments, ailerons, tail surfaces and the undercarriage. As a
result of being without flaps the landing speed was very high and
becuase there were no spoilers they couldn't loose speed or altitude
and actually had to circle and zig zag to loose both speed an altitude.

What powered these controls?

I assume the insturments were powered by the ram air turbine, but
ailerons are BIG. What powered those?

-Thanks