Mass production machines interceptor MiG -31 ” Foxhound ” was launched before the end of all tests and test flights . In June and July 1977, Sokol plant in Nizhny Novgorod ( the days of the Soviet Union was the Gorki ) , the first two serial aircraft with serial numbers 01-01 and 01-02 . Aircraft serial MiG -31 ( Izwielije 011) differ from the prototype machines (E- 155MP ) larger wing flaps , tail- less horizontal and przekonstruowanymi air brakes . Between the engines was established additional fairing that removes annoying vibrations of the rear part of the fuselage . Operational readiness of the first machines MiG -31 achieved in 1983 , and the first unit equipped with these planes was 786 IAP ( ” Istriebitiel Awiacjonnij Polka ” – ” Fighter Regiment “), Air Defence ( PWO – ” Powietrznyja Defense ” ) , stationed in Pravdinsk near Nizhny Novgorod , before using an MiG – 25PD . As already hinted above, the West first little news about the new interceptor fighter appeared after fleeing the Soviet Air Force pilot Viktor Belenki the aircraft MiG- 25P . In 1981, the U.S. published the first figure representing a hypothetical vision of how he could look like the MiG -31. In autumn 1985 years the MiG -31 was first photographed by the Norwegian F -16 over the Barents Sea and from then on it was determined in NATO code ” Foxhound ” . Manufacture of machinery MiG -31 in Nizhny Novgorod lasted until April 1994 , when it left the factory halls last, have a copy of the modified aircraft , designated MiG- 31M . In total, this time built around 450 aircraft of this type of all varieties . For the purpose of training crews used two-seat MiG – 25U . MiG -31 and MiG -25 were relatively similar in the pilot , so there was no urgent need for school and a training version of the MiG -31. Just before his fall, the Soviet Air Defence had 10 regiments excellently equipped for a total of about 300 MiG -31. They acted and act indeed to this day one of the key roles in the defense of Russia. They replenished the military units deployed at strategic points all over the Soviet Union , including in Monczegorsku , Gromov , Chotiłowie and Kotlas , shielding the country from the north, in Rostov- on-Don, where exercising the custody of the Black Sea , as well as Morszańsku and Bolshoi Sawino covering industrialized the center of the European part of Russia. On the eastern edge of Russia based regiments in Jelizowo Sokol in Kamchatka and Sakhalin . Near the border with China ‘s regiment in Bratsk , Russia and the central part of the machine with wspominanego patrol regiment in Pravdinsk . However, most likely, at the time the threat of war planes may be ferrying to other airports , mostly in the far north of the country . In the late 80’s and 90’s , the appeal machines TU -128 , SU- 15TM and the withdrawal of MiG – 25PD , the MiGach -31 slept almost the entire burden of the protection of vast areas of the Soviet Union . This was particularly important in the north, where there was the greatest probability of taking the impact of NATO ‘s strategic bombers . As mentioned earlier , the network of early warning systems and air defense is there extremely rare , which , incidentally, very conducive to the entry of low-flying , supersonic bomber machine type B- 1B Lancer . Therefore, the MiG -31 are designed with just such extreme conditions. Therefore, from the above mentioned bases MiG -31 , mostly in the center of Russia , for the duration of the threat of war planes probably will fly to other airports , most likely just to the north of the country. Sturdy , two-wheel main landing gear mounts used dog tags among other things , to facilitate machine handling the snow-covered runways . Due to the local poor radar network MiG -31 had very limited access to the information provided control guidance on the ground. In this case, check the possibility of autonomous action , especially effective when mutual cooperation in the formation. Using this method the machine moving aircraft 4-6 groups at intervals up to 200/250km . In this way, thoroughly searched was a strip 800/1200km , exchanging vital information via data link . Today , devices enabling such cooperation to be nzastosowane including the upgraded MiG fighter 29SMT . The standardized tactical data exchange system was introduced in the U.S. Air Force at the beginning of the 80’s under the name of JTIDS and JSTARS . For the Russians, the system is still new , and only on completion of the work on this type of modules that may be applied in the near future for all airplanes PWO and WWS . ( see it really worth it )After the final collapse of Soviet Union and the end of the Cold War, the role of the MiG -31 in many respects considerably decreased. Since the United States ceased to be the ” main enemy ” and therefore in the absence of the threat of a massive NATO air strike , maintaining a large fleet of specialized interceptors in combat readiness was pointless . It was one of the main reasons for which in 1994 closed their serial production . Many machines were shifted to the reserve and reduced the amount of regiments sustained the highest level of combat readiness . On this day, the Russian Air Force is about 350 MiG -31 all versions. The council only foreign member of the MiG – 31 is Kazakhstan , which after the collapse of the Soviet Union accounted for about 30 aircraft from the former 356 IAP . Since the early 90’s, the Russians are trying to , as most of them military equipment , export MiG -31, but so far not found in any country seriously interested in buying them . Among others, it has been proposed Libya and Iraq , which, however, were covered by long embargo , as well as Sudan and China , which, however, decided to export the SU- 27sk . Even in Russia, his role began to gradually decrease. Interest in a jiffy -31 revived after several narrow NATO operations , including Desert Storm and directed against the former Yugoslavia, where cruise missiles were used and the tasks they put on MiGami -31 was to include DISABLE them . Thus, in Russia , these machines will be used in Russia , after extensive renovations and remodeling , even to the years 2025-2030 .