AeroMorning March 31, 2026

March 31, 2026 – United Aircraft Corporation (UAC), Russia’s state aerospace conglomerate and a subsidiary of the state industrial holding Rostec, has announced the successful completion of a series of natural icing flight tests for three of its key commercial aircraft prototypes: the Yakovlev MC‑21, Yakovlev SJ‑100 and Ilyushin Il‑114‑300. These tests were conducted from March 12 to March 30, 2026 out of Talagi Airport near Arkhangelsk in northern Russia and demonstrate compliance with both Russian and international aviation certification standards for operations in icy atmospheric conditions.

United Aircraft Corporation (UAC) Overview

United Aircraft Corporation is the principal aerospace manufacturer in Russia, formed in 2006 by consolidating the nation’s major aircraft design bureaus and production facilities under one corporate umbrella. It oversees both military and civilian aircraft programmes, including the MC‑21, SJ‑100 and Il‑114 families. UAC is majority‑owned by Rostec and plays a strategic role in maintaining Russian aircraft design, certification and production capabilities.

Natural Icing Test Campaign – Key Findings

The natural icing campaign aimed to validate the behavior, flight control, structural integrity and anti‑icing/de‑icing systems of each aircraft in certified icing conditions. Testing involved flights lasting between four and seven hours, during which crews deliberately sought out cloud formations conducive to ice accretion at altitude. Onboard instrumentation monitored ice buildup on critical surfaces such as wings, tailplanes and engine inlets.

Across the programme:

·        The SJ‑100 completed nine flights in icing conditions.

·        The MC‑21 completed six flights under icing test parameters.

·        The Il‑114‑300 completed eight flights.

Programmes were executed fully, and results showed that all three aircraft met the applicable Russian and international certification norms for flight in natural icing environments, with satisfactory performance in stability, control and onboard system responses.

Typical test flights involved ascending into cloud layers where ice formation is most likely. Crews then measured ice accretion until target thickness levels were reached, verified aircraft handling characteristics, and exercised anti‑icing systems to ensure safe continued flight. In addition to the main icing profile tests, the SJ‑100 performed dedicated approaches with go‑around manoeuvres and stall‑warning system evaluations as part of the certification envelope tests.

Aircraft Profiles and European Competitors

a – Yakovlev MC‑21

The MC‑21 is a twin‑engine medium‑range jet built by Yakovlev Design Bureau under UAC. Designed for roughly 130–170 seats, it targets the same market segment as the Airbus A320neo family and the Boeing 737 MAX series. Its composite wing structure is intended to offer enhanced aerodynamic efficiency, and it is being equipped with Russian engines such as the Aviadvigatel PD‑14 (or later variants) to replace earlier Western‑made powerplants.

European competitors: Airbus A320neo family — the dominant narrow‑body platform in global commercial service.

b – Yakovlev SJ‑100

The SJ‑100 (formerly known as the Sukhoi Superjet 100) is a regional jet designed for approximately 75–100 passengers. Development emphasises import‑substituted components including Russian‑built engines (Aviadvigatel PD‑8) and avionics after earlier reliance on foreign equipment. It competes with established regional jets such as the Airbus A220‑100/300 (formerly Bombardier CSeries) on the larger end and the Embraer E‑Jet series on shorter regional routes.

European competitors:

·        Airbus A220‑100 — a highly efficient regional aircraft.

·        Embraer E175/E190 family — dominant in the regional narrow‑body market segment.

c – Ilyushin Il‑114‑300

The Il‑114‑300 is a twin‑engine turboprop designed for short‑haul regional routes and capable of operating from short or unprepared airstrips. It competes principally with turboprop aircraft such as the ATR 72 600 and De Havilland Canada (Bombardier) Dash 8 Q400 in its class. The Il‑114 programme has been revitalised under UAC with domestic components and environmental tests including the icing certification campaign.

European competitors:

·        ATR 72 600 — a widely used regional turboprop in Europe and globally.

·        De Havilland Canada Dash 8 Q400 — another leading turboprop option for short‑haul operators.

Significance and Next Steps

Completion of natural icing tests is a critical milestone in the certification process for all three aircraft. The results demonstrate that UAC’s designs can safely operate in harsh meteorological conditions that commercial operators commonly encounter, including cold and icing environments. With these tests completed, the MC‑21, SJ‑100 and Il‑114 programmes are positioned to advance toward final type certification — crucial for entry into service and potential export markets.

While the icing campaign itself does not yet guarantee full international certification (such as from EASA), the affirmation of compliance with international norms marks a vital step in aligning Russian aircraft with globally accepted safety and performance benchmarks, particularly for airlines considering new commercial aircraft in similar segments.