The Materials and Structures Research Center (MSRC), a part of the Institute of Aviation, has performed the ground vibration test (GVT) of Slovenian Pipistrel Virus SW 121 airplane. Based on the results of the GVT, the flutter computational analysis, including control surface balancing masses determination, has also been performed at the MSRC.
Based on the results of these tests and analysis, the producer of the airplane has performed the flutter flight tests.
On 18. April 2016 Pipistrel’s Virus SW 121 received the EASA full Type Certificate in CS-LSA category,