Aircraft
MAKS 2011: Upgrade of Sukhoi Su-25 Extended to Two-Seat Version
More than 50 Sukhoi Su-25s have now undergone a mid-life upgrade and modernization, bringing them to the Su-25SM standard.
The Russian air force has plans to upgrade all of its Sukhoi Su-25 fleet–now including its two-seat Su-25UB–to the standard of the Su-25SM (shown).
The Russian air force has plans to upgrade all of its Sukhoi Su-25 fleet–now including its two-seat Su-25UB–to the standard of the Su-25SM (shown).

More than 50 Sukhoi Su-25s have now undergone a mid-life upgrade and modernization, bringing them to the Su-25SM standard. The attack aircraft, which is modified by the Aircraft Repair Station 121 based in Kubinka, Russia, was on display last week at the Moscow Air Show (MAKS 2011). This year, the station launched a program for the mid-life upgrade of the Su-25UB twin seaters.

According to the Russian Ministry of Defense (MoD), the Su-25, which entered service in 1981, will remain operational until 2020. Its lifetime has been extended to 24 years and work continues on further extension.

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