Model Variants (Including Prototypes)
Wellesley - Base Series Name
Type 281 - Company model designation
Mk I (Type 287) - Initial production model with separated cockpits.
Mk II - Revised model with single-piece canopy
Type 289 - Engine test platform
Type 291 - Specialized "blind-flying" model
Type 292 - Long-range modification aircraft for record-setting.
Type 294 - Reinforced wing elements; prototype only.
Type 402 - Experimental model; three crew.