The trailing edge had simple flaps inboard of the nacelles and large ailerons outboard; the outer flaps were to incorporate air brakes, but were replaced with split-brakes prior to the first flight. Both the flaps and air brakes were operated hydraulically, with an independent system for emergency actuation.
The trailing edge included basic inboard flaps and substantial outboard ailerons; the outer flaps were intended to include air brakes but were replaced with split-brakes before the first flight. Both the flaps and air brakes were operated hydraulically, utilizing an independent system for emergency use.