its chocks during ground running of the engines, striking the 3ME killing one engineer on the 3ME. (NATO Bison-B) Myasishchev 3MS-1 (S:Starye [dvigateli] – old engines) – New production long-range bomber aircraft capable of accommodating the VD-7 engines but fitted with Mikulin RD-3M-500a, RD-3M or AM-3A engines due to a lack of flight ready VD-7's. (NATO Bison-B) Myasishchev 3MS-2 (S:Starye [dvigateli] – old engines) – New production in-flight refueling tanker aircraft capable of accommodating the VD-7 engines but fitted with Mikulin RD-3M-500a, RD-3M or AM-3A engines due to a lack of flight ready VD-7's. During the 1970s and 1980s the majority of surviving 3MS bombers were converted to 3MS-2 tankers. (NATO Bison-B) Myasishchev 3MN-1 (N:Novye [dvigateli] – new engines) – The initial production version of the 3MN long-range bomber with de-rated VD-7 engines to improve reliability after compressor blade failures. (NATO Bison-B) Myasishchev 3MN-2 (N:Novye [dvigateli] – new engines) – The initial production version of the 3MN in-flight refueling tanker with de-rated VD-7 engines to improve reliability after compressor blade failures. (NATO Bison-B) Myasishchev 3MSR-1 (S:Starye [dvigateli], Radioapparatura – old engines, avionics [upgrade]) – New production long-range bomber aircraft capable of accommodating the VD-7 engines but fitted with Mikulin RD-3M-500a, RD-3M or AM-3A engines due to a lack of flight ready VD-7's, and fitted with an upgraded avionics suite. (NATO Bison-B) Myasishchev 3MSN-1 (N:Novye [dvigateli], Radioapparatura – new engines, avionics [upgrade]) – Several new production long-range bomber aircraft capable of accommodating the VD-7 engines but fitted with Mikulin RD-3M-500a, RD-3M or AM-3A engines due to a lack of flight ready VD-7's, and fitted with an upgraded avionics suite. (NATO Bison-B) [Tema Tridtsat Shestt] Subject 36 – The government designation for the re-engined M-4. (NATO Bison-B) VM-T (Vladimir Myasishchev-Transportny) – Three 3MN-2 aircraft converted for oversize cargo flights with a large cargo pod supported on struts above the fuselage and Large rectangular fins attached to the tips of the tail-plane. Notably used for transporting the Buran shuttle and Energia launch vehicle components before the Antonov An-225 became available. Projected variants Myasishchev 3M-A (Atomny – nuclear) – A nuclear-powered reconnaissance derivative using an indirect heat transfer reactor in the bomb bay for nuclear gas turbines in the wing roots, with the crew housed in a windowless lead lined cockpit. Myasishchev 3M-M (Morskoy – naval) – A proposed flying boat with a boat hulled fuselage and floats under the wingtips. Myasishchev 3M-R (Razvedchik