Nikolai Dimidyuk, Rosoboronexport's special programs director, said Indonesia could also buy other Russian warplanes as well as Mi-17 and Mi-35 helicopters.

"Indonesia is still very interested in Russian fixed- and rotary-winged aircraft," he said.

He expressed confidence the Russian Finance Ministry would soon approve a $1 billion loan for Indonesia.

"We are sure that this loan will be used to buy arms," Dimidyuk said.

He added that Indonesia had asked Russia to modernize its Soviet-era weapons and equipment.

"All of their Soviet-made weapons are obsolete," he said.