The Indonesian Air Force has signed a $470m deal with Russian state arms exporter Rosoboronexport for the procurement of six additional Sukhoi Su-30MK2 multirole fighter aircraft.

The final deal follows a preliminary agreement signed between the two nations in December 2011 at the Langkawi International Maritime and Aerospace Exhibition (LIMA) 2011 in Malaysia. The Su-30MK2 is a twin-engine multirole fighter aircraft designed for all-weather, air-to-air and air-to-surface deep interdiction missions and is designated as a naval strike fighter.

The aircraft is equipped with an improved fire-control system that enables enhanced surface-target detection capabilities and an air-to-air and air-to-surface weapons suite with the ordnance mounted on 12 hardpoints. The multirole fighter aircraft is equipped with an in-flight refuelling system, reinforced airframe and landing gear to allow operation with maximum combat load and fuel capacity with a take-off weight up to 38t.

The weapons suite includes the built-in GSh-301 30mm automatic, single-barrel, high-rate-of-fire cannon with an ammunition load of 150 rounds, missiles, rockets and bombs, in addition to surveillance/targeting systems, air-to-air missiles and air-to-surface missiles.

Currently, the Indonesian Air Force operates ten Sukhoi fighters including six Sukhoi SU-27SKMs and four Sukhoi SU-30MK2s; one squadron of the jetfighters is likely to be based at Hasanuddin Airbase in Makassar. Deliveries for the latest order are expected to begin in 2013.mRussia has so far delivered three Su-30MK2 and three Su-27SKM fighters to Indonesia under the $300m contract signed in 2007, and two Su-27SK and Su-30MK fighters in 2003.

The Indonesian Army and Air Force will also receive Bell 412 and PUMA helicopters from PT Dirgantara Indonesia, according to defence deputy minister Sjafrie Sjamsoeddin.