Russian inspectors have cracked down on Yakovlev Yak-42 operators in the wake of the fatal Yaroslavl crash, with actions including refusing a Turkey-Russia flight by the operator of the ill-fated jet.
The Yak Service flight from Izmir, Turkey, to Moscow Vnukovo was halted by Russian federal transport supervisor Rostransnadzor after it found one of the Yak-42's engines was fitted with expired components.
Rostransnadzor said the flight by the 19-year old trijet (RA-42412) would have been "potentially hazardous".
The agency has also suspended a Yak-42 service by the carrier IzhAvia, from Moscow Domodedovo to Makhachkala, the capital of Dagestan, over "violations that affect flight safety".
Rostransnadzor said both carriers had been ordered to halt flights with the aircraft involved in order to eliminate the problems.
Flights with three other Yak-42s - operated by Grozny Avia and Gazpromavia at Vnukovo, and KrasAvia at Krasnoyarsk - have also been halted, it added.
Irregularities have also been found on a Gazpromavia Yak-42 at Samara, related to documentation, and two Yak-42s operated by Tulpar Air and VIP charter specialist RusJet.