33 PS-5 - Nyeman/Kharkov R-10 PS-7 - Tupolev ANT-7 PS-9 - Tupolev ANT-9 PS-30 - Martin 156 PS-35 - Tupolev ANT-35 PS-40 - Tupolev SB PS-41 - Tupolev SB PS-42 - Petlyakov Pe-8 PS-43 - Vultee V-11 PS-84 - Lisunov Li-2/Douglas DC-3 PS-89 - Laville ZIG-1 PS-124 - Tupolev ANT-20bis R (Р) - Razvedchik (Reconnaissance) R-Z - Polikarpov R-1 - Polikarpov R-2 - Polikarpov R-3 - Tupolev ANT-3 R-4 - Tupolev (prototype only) R-5 - Polikarpov R-6 - Tupolev ANT-7 R-7 - Tupolev ANT-10 (prototype only) R-9 - Kochyerigin R-9/SR-9 R-10 - Neman/KhAI R-12 - Yakovlev (prototype only) RD (РД) - Rekord Dalnost – (long range record aircraft) RD - Tupolev ANT-25 ROM (РOМ) - Razvedchik Otkrytogo Morya (reconnaissance open sea) ROM-1 - Grigorovich ROM-2 - Grigorovich SB (СБ) - Skorostnoi Bombardirovshchik (high-speed bomber) SB: Tupolev ANT-40 ShB (ШБ) - Shturmovoi Bombardirovshchik (attack bomber) ShB: Sukhoi Su-2 SPB (СПБ) - Skorostnoi Pikiruyuschii Bombardirovshchik (high-speed dive bomber) SPB - Polikarpov I-16 variant used with Zveno project SPL (СПЛ) - Samolyet dlya Podvodnikh Lodok (aeroplane for submarines) SPL - Chyetverikov SS (СС) - Stratosfernii Samolyot (stratospheric aircraft) SS - Chizhevski BOK-1 T (Т) - Torpedonosets (Torpedo bomber) T-1 - Tupolev ANT-41 TB (ТБ) - Tiazholyi Bombardirovshchik (heavy bomber) TB-1 - Tupolev ANT-4 TB-2 - Polikarpov (prototype only) TB-3 - Tupolev ANT-6 TB-4 - Tupolev ANT-16 TB-5 - Grigorovich TB-6 - Tupolev ANT-26 TB-7 - Tupolev ANT-42 (redesignated Pe-8) TSh (ТШ) - Tiazholyi Shturmovik (heavy ground attack aircraft) TSh-1 - Grigorovich (modified Polikarpov R-5) TSh-2 - Grigorovich (modified Polikarpov R-5) TSh-3 - Kocherigin TsKB-4 U (У) - Uchebny (trainer) U-1 - Avro 504 U-2 - Polikarpov U-2/Po-2 U-3 - Mikhelson U-4 - Mikhelson U-5 - Nikitin NV-5 UPB (УПБ) - Uchyebno Perekhodnoi Bombardirovshchik (training transitional bomber) UPB - Kazan KAI-3 UT (УТ) - Uchebno-Trenirivochnyi (advanced trainer) UT-1 - Yakovlev UT-1 UT-2 - Yakovlev UT-2 UT-3 - Yakovlev UT-3 UTI (УТИ) - Uchebno-Trenirivochnyi Istrebitel (advanced fighter trainer) UTI-1 - Polikarpov I-15 as fighter trainer UTI-2 - Polikarpov I-16 as fighter trainer UTI-3 - Polikarpov I-16 as fighter trainer UTI-4 - Polikarpov I-16UTI fighter trainer UTI-5 - Nikitin NV-2 UTI-6 - Nikitin NV-4 UTI-26 - Yakovlev Yak-1/Yak-7 VIT (ВИТ) - Vozdushnyi Istrebitel Tankov (air tank destroyer) VIT-1 - Polikarpov VIT-2 - Polikarpov Soviet system after December 9, 1940 The system after December 9, 1940 (in accordance with order No 704) used letter abbreviations for the