 Four section Handley-Page automatic slats were fitted to the entire leading edges out board of the engine nacelles and differential slotted ailerons at the trailing edges.The fuselage of the RWD-11 comprised a welded chrome-molybdenum-steel tubing structure, covered with plywood from the nose, aft to the cabin door, with fabric aft of the door to the fabric covered wooden tail-section.The cockpit had excellent visibility for the two pilots who sat side by side forward of the comfortable passenger compartment which seated six in three pairs on adjustable seats, with electric lighting, controlled ventilation and controlled heating from heat exchangers on the engine exhausts.