Model Variants (Including Prototypes)
Fi 156 V1 - Initial Prototype; metal adjustable propeller; single example produced.
Fi 156 V2 - Prototype Model; initial flyable example; fitted with wood propeller; single example produced.
Fi 156 V3 - Prototype Model; based on the V2 prototype; testbed for radio communications equipment; single example produced.
Fi 156 V4 - Prototype Model; based on the V3 prototype; winter ski undercarriage; optional auxiliary fuel tank.
Fi 156 V5 - Prototype Model; A-series production standard.
Fi 156 A-0 - Pre-production examples based on the V3 prototype; 10 examples produced; unarmed.
Fi 156 A-1 - Initial Production Examples; between 6 and 16 aircraft delivered; unarmed.
Fi 156 B - Proposed Improved Production Model; fitted with automatic retractable landing gear slats; improved aerodynamics and speed; never mass-produced.
Fi 156 C-0 - Multi-role pre-production models based on A-series production models.
Fi 156 C-1 - Staff Transport/Liaison Role Designation; seating for three.
Fi 156 C-2 - Reconnaissance/MedEvac Variant; reconnaissance role fitted with single camera; accommodation for 2 personnel; MedEvac role has provision for single stretcher; reconnaissance model fitted a single MG 15 machine gun in rear cockpit.
Fi 156 C-3 - "Definitive" Storch; multi-purpose/multi-role model; powered up Argus As 10P engine; universal cockpit for various required roles.
Fi 156 C-3/Trop - Tropicalized Variant of base C-3 model; filtered engine air intakes; appearing in 1941.
Fi 156 C-5 - Fitted with Argus As 10P engine; provision for photographic reconnaissance camera in under fuselage position; provision for jettisonable fuel tank; winter ski undercarriage optional.
Fi 156 C-5/Trop - Tropicalized Variant of base C-5 model; filtered engine air intakes; appearing in 1941.
Fi 156 D-0 - Pre-Production Air Ambulance Model based on the C-production models; enlarged cockpit compartment; enlarged cabin doors; fitted with Argus AsP series engine.
Fi 156 D-1 - Production Model of the D-0 pre-production form beginning in 1942.
Fi 156 E-0 - Liaison Variant; based on the C-1 production models; at least 10 examples fitted with tracked undercarriage; production beginning in 1941.
Fi 156 F (also Fi 156 P) - Counter-Insurgency Variant; based on C-3 production model; appearing in 1942; fitted with general purpose machine guns in side cabin windows; provision for conventional drop bombs and smoke-laying devices.
Fi 156 U - Anti-Submarine Variant; based on the C-3 production model; provision for depth charges; appearing in 1940.
Fi 156 K-1 - Swedish Export Variant based on the C-1 production model.
Fi 256 - Five Seat Civilian Passenger Transport; at least two examples were produced by French firm Morane-Saulnier.
MS-500 - French Liaison Variant; fitted with Argus engine of 250 horsepower.
MS-501 - French Built Variant; fitted with Renault 6Q engine of 233 horsepower.
MS-502 - French Liaison Variant; based on the MS-500 production model; fitted with Salmson 9ab radial piston engine of 230 horsepower.
MS-504 - French Built Variant; fitted with Jacobs R-755-A2 radial piston engine of 304 horsepower.
MS-505 - French Built Observation Variant based on the MS-500 production model; fitted with Jacobs R-755-A2 radial piston engine of 304 horsepower.
MS-506 - French Built Variant; fitted with Lycoming engine of 235 horsepower.
Mraz K-65 Cap - Czechoslovakian Built Variant; post-war.
Antonov OKA-38 - Illegal Soviet Copy of Fi 156; fitted with illegal copy of French Renault MV-6 engine; production halted before deliveries by invading German ground forces in 1941.