This wing was part of the old section and hadn't yet been fitted with central heating.

The wing was fitted with Gouge flaps similar to those of the flying boats.

The wing was not fitted with flaps or airbrakes.

The wings had the same plan and dimensions as before but were fitted with the earlier, full span spoilerons.

The wing was fitted with leading edge slots and flaps to give a good landing performance.

The wings are fitted with vortex generators for low-speed flight control.

To improve performance, a totally new wing was fitted, much thinner than the previous one and a swept tail surface.

The wing is fitted with leading edge and Fowler flaps.

The later swept forward wings were fitted to the BT-14.

The wing is fitted with flaps and the elevator features a trim system.