Spectra Aircraft, in cooperation with specialists from the Chaplygin Siberian Aeronautical Research Institute (SibNIA), has conducted the maiden flight of an updated version of the S7 Tango light aircraft. The flight lasted approximately 10 minutes and focused on evaluating handling qualities, system functionality, and basic flight performance, according to a statement released by S7 Group, the aircraft’s developer.
Prior to the first flight, the program completed a full scope of ground-based static tests covering primary structural elements and onboard systems. Test results confirmed structural integrity and equipment operability, providing the basis for safely initiating flight testing.
“The updated variant of the aircraft features improved weight efficiency, aerodynamic performance, and takeoff and landing characteristics. These improvements were achieved through structural optimization and the introduction of new engineering solutions,” said Alexander Stepanov, Chief Executive Officer of Spectra Aircraft.
In parallel, Spectra Aircraft has completed engine testing of the APD-520 Lider powerplant at its Torbeevo technical center near Moscow. Thrust measurements confirmed compliance with design targets and expected operational performance. The engine is intended specifically for integration with the S7 Tango platform.
The S7 Tango is a four-seat, all-composite light aircraft designed for ab initio pilot training in civil aviation as well as for private passenger operations. Development of the aircraft began in spring 2023 and is being carried out at S7’s Torbeevo facility. Certification flight testing is scheduled to begin in 2026, with entry into serial production planned for 2027.
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