This is the best summary I could come up with:

MOSCOW — Over the first eight days of December, civilian Russian airplanes experienced at least eight serious mechanical failures, terrifying many passengers as pilots were forced to make emergency landings in cities across the country.

The pilots made an emergency landing, Russian Telegram channels reported, and video from inside the cabin showed passengers screaming and crying as oxygen masks deployed from the ceiling.

“Logistic chains are available to domestic airlines, thanks to which they receive the required spare parts and components for the normal operation of aircraft,” Mikhail Vasilenkovf the Federal Air Transport Agency said in a December statement.

But in a December opinion article in Kommersant, a leading newspaper, Oleg Panteleyev, director of Aviaport, a Russian aviation think tank, said the risks had “increased exponentially,” adding that there had been a sharp reduction in technical inspections.

But in November, Russian airline Pobeda had its developer certificate suspended because of serious violations in modifications to three Boeings, including alterations to the traffic collision avoidance system, according to pro-Kremlin Izvestia newspaper.

A Superjet flight from Vladivostok to Chita in October was a prime case: On takeoff, passengers felt a thud, and the plane had to circle, burn fuel and make an emergency landing because of a problem with the left engine.

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