Model Variants (Including Prototypes)
TB-3 - Base Series Designation
ANT-6 - Developmental designation
TB-3-4M-17F - Definitive / initial production models
TB-3-4M-34 - Fitted with Mikulin AM-34 series engines; refinements; about 34 produced.
TB-3-4M-34R - AM-34R engines fitted; improved performance model; improved defensive features.
TB-3-4AM-34RD - Long-range variant utilizing streamlining and metal propeller blades.
TB-3-4AM-34RN - Proposed high-altitude model with Am-34RN engines and four-bladed propeller units; not adopted.
TB-3-4AM-34FRN/FRNV - AM-34FRN/FRNV engines with four-bladed propellers; revised turret locations; improved performance.
TB-3D - Proposed model with Charomsky AN-1 series diesel engines of 740 horsepower; not adopted.
G-2 - Conversion transport models with M-17 and M-34 engines being used (by Aeroflot).
ANT-6-4M-34R "Aviaarktika" - Specialized model for North Pole expedition work.