The MС-21-310 prototype, tail number 73055, has completed a series of flights as part of the certification program for external lighting systems. According to the United Aircraft Corporation (UAC), strobe beacons were visible from a distance of at least 25 miles (40 km) during flight, a critical parameter for operational safety and navigation.
Testing was conducted throughout all phases of flight, including taxiing, takeoff, approach, landing, and post-landing taxi. Test pilots assessed the beam direction and runway surface illumination provided by landing and taxi lights. They also evaluated the impact of glare from landing lights, fuselage-mounted and strobe beacons, and navigation lights.
The aircraft is equipped with a fully domestically produced external lighting suite developed by the NII Mikrosystem Research and Production Center, including landing, retractable, and taxi lights. The tests confirmed the high reliability and operational effectiveness of the lighting systems.
Previously, in September 2019, the MС-21-300 prototype (RA-73051), configured with imported systems, performed its first night landing as part of its certification campaign. During that flight, the navigation, landing, and external lighting systems were evaluated. The aircraft conducted several low passes over the runway from both directions at various altitudes for instrumented system testing. The flight test objectives were fully met, and all systems operated normally.
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