TUSAŞ Member of the Board of Directors and CEO Temel KOTİL shared from his Twitter account the photos of the 4th GÖKBEY prototype, taken during its first flight, with a tweet on May 17, 2022, and added: “I would like to thank all my colleagues for their devotion and hard work. We will keep working to achieve more.” During these test flights, GÖKBEY was powered by LHTEC’s CTS800-4AT turboshaft engines, each generating 1,373shp.

As it may be recalled, a contract was signed between TUSAŞ and LHTEC on December 10, 2015, for the supply of 10 CTS800-4AT turboshaft engines to be used in prototypes to be manufactured under the Development Phase of the T625 GÖKBEY Turkish Light Utility Helicopter (TLUH) Project. A total of 4 T625 GÖKBEY Prototypes have been manufactured so far and LHTEC CTS800-4AT engines have been used in helicopters. While 8 engines power the ground and flight prototypes of the T625, 2 engines are kept in the inventory as spares.