At the end of December 2016 the Russian Federal Air Transport Agency ordered the operators of the aircraft Sukhoi SuperJet SSJ100 to inspect the mounting of tail stabilizer, which has a factory defect.
Federal Air Transport Agency has suspended operation of all aircraft with such a defect until it is fixed.
There were 14 planes suspended in Russia, and 11 out of 22 planes of Mexican carrier Interjet. There are 87 jets in total in the world. Thus, one third of all aircraft have been temporarily taken out of service. Earlier this week Interjet announced that 6 aircraft resumed operation after repair, so currently there are around 20% of all SSJ100 aircraft still non-operational. They stay on the ground till the end of January.
The representative of the manufacturer of SSJ100, Sukhoi Civil Aircraft, insists that there is no chance such a defect occurs in the future, so these cases did not affect negotiations with potential operators.
SSJ100 is the first civilian aircraft, designed and released in Russia after the collapse of the Soviet Union.