© ЕРА/Ivan MilutinovicFlood consequences in Serbia
The Il-76 was being loaded in Chkalovsky. Electricity supply stations, motor pumps, water tanks and about 250 thermoses would be brought on board, he said.
It is not the first humanitarian cargo for Serbia from Russia, he added.
Russia provided humanitarian aid for Serbia in May this year after the devastating flood.
The plane is expected to arrive at the Belgrade air base on Saturday.
It will not be the last aid cargo. Russia planned to send more, the official said.
Comment: This year Serbia suffered the worst flooding since records began 120 years ago.
Earlier this month: Deadly floods return to Serbia and Bosnia
Floods in May: Floods wipe out entire towns in Balkans
Floods in April: Floods in Serbia prompt evacuation of more than 400 families