According to Interfax referring to its own sources, the defects were found in Superjets’ stabilizers, so some aircraft were suspended from operating.
It was not specified how many plains were affected by the defect. According to Interfax, there are boards belonging to Aeroflot among them.
The interviewee said that the defect was not critical, and was found during a regular inspection. It is planned to check all Superjets in the near future.