Russia’s effort to restore domestic passenger-aircraft production has reached an important stage, but a new challenge is emerging: its engines may be arriving at a faster pace than the aircraft that are intended to use them. The PD-14 turbofan engine production at Perm is currently in excess of the assembly schedule for the MC-21 at the Irkutsk Aviation Plant, as indicated by a report published by Pervy Tekhnichesky on 11 October 2026. According to Roman Gusarov, an aviation expert, the current engine-production rhythm is in accordance with the manufacturing of aircraft, as powerplants are delivered ahead of the installation schedule.
At first glance, this is a welcome problem. Engines are among the most technologically demanding components of a modern passenger aircraft, and their availability prior to the completion of the airframes can mitigate disruptions to production schedules. Nevertheless, the more significant test will be whether Russia can effectively coordinate engine deliveries, aircraft assembly, certification, and final production at a significantly increased volume in the long term.
PD-14 production moves ahead of aircraft assembly
According to the most recent report, Irkutsk is in the process of finalizing the assembly of the third serial MC-21 under its contract with Aeroflot. However, the engines for the next aircraft have already arrived at the factory. The airframe in question has not yet reached the stage at which its engines can be installed. This demonstrates the difference between the production of a major component and the completion of an aircraft that is prepared for testing and eventual commercial service.
The position is also reflected in a separate report published on 24 September. Although the second serial aircraft was undergoing ground preparations prior to its inaugural flight, the United Engine Corporation (UEC), a subsidiary of Rostec, supplied a PD-14 for the fourth serial MC-21. MS.0015 was the factory number of the aircraft that was undergoing system and equipment tests prior to engine runs. The report also indicated that 18 MC-21-310 aircraft were in various phases of production.
These figures demonstrate that aircraft manufacturing is not a single assembly-line operation in which all components are delivered simultaneously. Engines, systems, fuselage sections, and other equipment undergo seperate production cycles. Irkutsk can prevent disruptions during the installation phase of an aircraft by maintaining a reserve of engines.
The real test will come at 36 aircraft a year
The production challenge becomes more demanding as Russia aims to increase the production of MC-21. The Irkutsk plant is preparing for a gradual increase from 14 aircraft in 2029 to 18 and subsequently 24, with a long-term goal of 36 aircraft annually, according to Gusarov.
Assuming two engines per aircraft, the program would necessitate a minimum of 72 installed engines annually at a rate of 36 aircraft per year. The actual manufacturing requirement would be higher if production planning includes spare engines, replacements, testing requirements, and an inventory buffer. This ensures that the current lead over airframe assembly is equally critical as the capacity to scale PD-14 production.
Therefore, the immediate objective is not just to increase the production of engines, but to ensure consistent deliveries as the aircraft program continues to expand. Any disruption in manufacturing or logistics could potentially impact final assembly if engines are delivered only just in time. Although an existing reserve provides protection, it is unable to compensate indefinitely for a discrepancy in production rates.
A technically advanced engine still needs industrial scale
The PD-14 is a major milestone for the civil aviation industry in Russia. It was developed by UEC-Perm Engines for the MC-21 program and received its type certificate in 2018. The engine is equipped with technologies that have been developed for contemporary high-bypass turbofan engines, such as lightweight hollow titanium fan blades, specialized coatings, and advanced materials. Rostec has previously emphasized the development and implementation of 16 critical technologies that are associated with the program.
However, a certified engine and a mass-produced engine are not the same industrial accomplishment. Certification is a sign that a design satisfies the relevant specifications. However, sustained serial production necessitates factories, suppliers, trained personnel, quality-control systems, and production processes that can produce consistent output.
The exact same concern was expressed in a report that was published in September. Oleg Smirnov, a veteran pilot, contended that the main challenge would be to increase the production of PD-14 to the volume necessary for the MC-21 program. His remarks underscored the necessity of expanding manufacturing capabilities rather than exclusively focusing on the engine’s technical capabilities.
Can new manufacturing technologies accelerate production?
Additionally, UEC is striving to enhance its manufacturing processes in order to reduce production cycles. Pervy Tekhnichesky reported in August 2026 that the PD-14 program was using industrial 3D printing to produce complex components, such as swirlers in the combustion chamber. The geometry of these components is crucial to the efficacy of combustion, as they contribute to the formation of the air-fuel mixture.
Additive manufacturing has the potential to decrease the number of production operations necessary for complex parts and facilitate the creation of geometries that are challenging to accomplish through traditional manufacturing methods. Dimensional scanning and other inspection methods are also implemented by UEC to verify printed components. Nevertheless, these technologies serve to improve rather than replace the necessity for traditional machining, material qualification, and rigorous quality assurance.
The engine program’s expansion could be facilitated by these improvements; however, their overall effect will be dependent upon the extent to which the production process is benefited and whether suppliers are able to increase their output in conjunction with the primary manufacturing facility.
Certification remains critical to the MC-21’s future
The MC-21 program is also confronted with tasks that extend beyond manufacturing. The aircraft is being developed by Russia in a configuration that utilizes domestically produced systems and equipment, thereby reducing its reliance on foreign suppliers. This entails the testing and validation of the integrated aircraft, rather than the mere installation of Russian-made components.
In November 2025, the United Aircraft Corporation announced that flight certification testing had commenced for a second MC-21 that had been equipped with Russian systems. The aircraft’s systems and overall performance must be demonstrated by the program prior to the aircraft’s entry into commercial service in its fully domestic configuration.
Consequently, a surplus of PD-14 engines cannot automatically translate into additional passenger aircraft entering service. Assembly, ground testing, flight testing, and the requisite certification milestones are all required for the aircraft to advance.
The next bottleneck could determine the production timetable
Russia has the opportunity to establish a more resilient manufacturing system as a result of the current circumstances. The 18 aircraft reported at various production stages provide a foundation for increasing output, while engines arrive prior to airframes, providing a useful buffer. However, the determining factor will be whether both factories can maintain increased production rates without sacrificing quality or delivery reliability.
PD-14 manufacturing will require scaling in response to the MC-21 program’s eventual reach of 24 and 36 aircraft annually. Coordinated investment in engine production, aircraft assembly, component suppliers, and certification activities will be essential for success.