United Engine Corporation (UEC) specialists have developed new repair methods for SaM146 engines powering SSJ100 regional jets. These initiatives follow the suspension of maintenance support from France’s Safran since 2022. The information was released by Rostec’s press office.
In Perm, UEC-STAR has launched serial modular repairs of electronic control units for the SaM146’s Full Authority Digital Engine Control (FADEC) system. The team is now mastering component-level repairs, including replacement of microchips, transistors, and diodes. This approach reduces reliance on imported parts.
At UEC-Saturn in Rybinsk, engineers have introduced repairs for ten critical engine components, implementing over 74 design modifications. Among these are alternative ignition plugs and fuel filters, which have been in use since 2023. To date, airlines have received more than 5,700 ignition plugs and 520 fuel filters.
From 2022 to 2025, UEC-Saturn has completed over 150 SaM146 engine repairs, including 33 this year. Certification efforts to extend the service life of key components have increased average engine life by 2,000 flight cycles. Quality control utilizes advanced test benches, including the e-Bird simulator, which replicates all Superjet systems in their imported configuration.
In parallel with ongoing fleet maintenance, UEC-Saturn is developing a fully domestic version of the aircraft equipped with the Russian-made PD-8 engine. This will enable complete independence from foreign powerplants for SJ-100 aircraft.
Current repair volumes and the introduction of alternative components ensure continued support for new Russian regional aircraft and minimize risks associated with sanctions and the cessation of foreign maintenance services.
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