MiG-21UM
Mikoyan-Gurevich · Soviet Union · first flew 1971 · fighter
The MiG-21UM (Mongol-B) is the definitive two-seat trainer variant of the MiG-21, based on the third-generation airframe with a one-piece continuous canopy over the tandem cockpits and updated avionics to match the combat standard of the MiG-21MF/SM.
Recognition (WEFT)
| W — Wings | Mid-mounted, delta |
|---|---|
| E — Engines | 1 × turbojet, fuselage-mounted |
| F — Fuselage | 15.49 m fuselage |
| T — Tail | Conventional |
WEFT is AircraftIQ's four-point recognition method — how it works.
Spot it by:
- Two-seat MiG-21 with broad continuous one-piece canopy over tandem cockpits
- Broad dorsal spine of the third-generation family
- No nose radar; two-seat trainer outlines with no cannon
The one-piece continuous curved canopy over two cockpits is the most reliable recognition feature distinguishing the UM from the earlier U's separate canopies. The broad third-generation dorsal spine is present, in contrast to the narrow spine of the earlier U trainers.
Specifications
- The MiG-21UM has a length of 15.49 m (51 ft).
- It has a wingspan of 7.15 m (23 ft).
- Its maximum speed is 2000 km/h (1243 mph).
- Typical crew: 2.
Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.
History
The UM was developed to provide a trainer that matched the avionics standard of the third-generation combat MiG-21s, as the earlier U and US used older airframes. It was produced in the Soviet Union and licensed to other manufacturers. The continuous wider canopy — replacing the separate canopies of the U — was the most visually distinctive change. Production ran from 1971 through the late 1970s.
Variants
The MiG-21UM is the last in the U/US/UM trainer series. Some were later upgraded with modern avionics by operators including Romania (MiG-21 LanceR) and Croatia (as part of broader fleet upgrades). The UM standard was the definitive MiG-21 trainer.
Where you'll see it
Operated by all major MiG-21 users as the primary advanced trainer. Romania, India, Finland, Poland, and many others flew the UM. In India, HAL produced and operated MiG-21UM trainers alongside combat variants. The type remains in limited service with a handful of operators into the 2020s.
Related aircraft
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