Defense & Military
United Aircraft Corporation Completes 2025 Su-35S Fighter Delivery Program
UAC completed the 2025 Su-35S fighter delivery program with seven batches for the Russian Aerospace Forces, increasing output from 2024 levels.
This article is based on official press releases from the United Aircraft Corporation (UAC) and verified industry data.
The United Aircraft Corporation (UAC), a division of the state-owned defense conglomerate Rostec, has officially concluded its 2025 production program for the Su-35S multirole fighter. According to company announcements released in late December, the Komsomolsk-on-Amur Aviation Plant (KnAAZ) delivered its seventh and final batch of the year to the Russian Aerospace Forces (VKS).
This delivery marks a significant escalation in production tempo. UAC officials and state media have characterized 2025 as a “record-breaking year” for the facility. The delivery of seven distinct batches represents a substantial increase compared to 2024, which saw only four batches delivered. This surge suggests that the manufacturer has successfully adapted its supply chains to meet the high-intensity demands of the ongoing conflict in Ukraine.
While specific airframe numbers are rarely disclosed in full, industry data estimates the total 2025 output to be between 14 and 21 aircraft, assuming standard batch sizes of two to three jets. This brings the estimated total operational fleet of Su-35S fighters to approximately 155 units.
The completion of the 2025 schedule highlights a shift in the Russian defense industry toward a sustained wartime footing. According to UAC, the deliveries occurred steadily throughout the year, with batches handed over in March, May, June, August, September, November, and December. This consistent stream contrasts with the more episodic delivery schedules seen in previous years.
Vadim Badekha, CEO of UAC, emphasized the stability of the production lines in a statement accompanying the release.
“Plants are consistently increasing the output of in-demand combat equipment… the 2025 plan was fulfilled ahead of schedule in some facilities.”
, Vadim Badekha, UAC CEO (via press release)
The ability to deliver seven batches implies that KnAAZ has managed to circumvent certain bottlenecks caused by Western sanctions, likely through import substitution or alternative supply routes for critical electronic components. However, analysts note that challenges remain, particularly regarding advanced radar components and labor shortages as the manufacturer pushes for higher output. The aircraft delivered in 2025 retain the core “Generation 4++” characteristics of the Su-35S but reportedly feature specific enhancements tailored for the current combat environment. According to verified data regarding the delivery program, the 2025 batches are integrated with the R-77M (Izdeliye 180) long-range air-to-air missile.
This weapon system utilizes an active electronically scanned array (AESA) seeker, which offers a higher probability of intercept against maneuvering targets compared to previous iterations. The aircraft continue to utilize the Irbis-E passive electronically scanned array (PESA) radar and AL-41F1S turbofan engines with thrust vectoring, ensuring high maneuverability.
In official releases, UAC has cited feedback from VKS pilots currently operating the platform.
“Pilots describe the aircraft as ergonomic, comfortable, and highly reliable, with a proven combat record.”
, UAC Press Release
The data indicates a clear strategic prioritization of “sortie density” over experimental modernization. By focusing on the mature Su-35S platform rather than exclusively accelerating the production of the fifth-generation Su-57, the Russian defense industry is prioritizing immediate availability to offset combat attrition.
We observe that the Su-35S remains the primary air-superiority asset for the VKS in the Ukraine theater. Its roles have expanded to include:
The 50% increase in batch deliveries year-over-year signals that despite economic pressure, the industrial base is currently capable of replacing losses at a rate that sustains operational pressure on the front lines.
Looking ahead, UAC has confirmed that work on the 2026 production program is already in progress. However, the allocation of these future airframes remains a subject of industry debate. While domestic demand remains high, KnAAZ faces competing obligations from international customers.
Confirmed orders from Iran and Algeria may absorb a significant portion of the plant’s capacity over the next 12 to 24 months. Analysts warn that domestic deliveries to the VKS could potentially decrease in 2026 as the manufacturer attempts to balance urgent wartime requirements with long-standing export contracts. Furthermore, the intense production schedule is straining the workforce, prompting UAC to actively recruit personnel to fill labor gaps. Sources: RuAviation / UAC Press Release
United Aircraft Corporation Completes 2025 Su-35S Delivery Program with Record Output
Production Surge and Industrial Resilience
Technical Configuration and Upgrades
AirPro News Analysis: Strategic Implications
2026 Outlook and Export Constraints
Sources
Photo Credit: UAC