Russian authorities have suspended Antonov An-12 operations until carriers using the type have adopted priority measures to reduce operational risks.
This suspension follows the loss of an Avis-Amur An-12, with 11 passengers and crew, in the far east of the country on 9 August.
The federal transport supervisory service Rostransnadzor said that 12 An-12s are operated in Russia by six carriers.
Rostransnadzor stated that it had "made a decision about suspending flights" with the four-engined transport until the safety controls were in place.
The authority said that it had undertaken ramp checks of the Avis-Amur An-12 in March and May this year, which had "revealed observations connected with the technical operation of the aircraft".
While Rostransnadzor did not disclose further details on its findings, it said these observations were brought to the attention of the carrier's management in order to remedy them and develop "measures to prevent and respond to the possibility of an emergency" on the aircraft.