The development of the 2nd stage or “final” engine for fifth-generation T-50 fighter (PAK FA) will be completed in mid-2015, a representative of United Engine Corporation (UEC) told RIA Novosti.

Taking into account the time needed for development of the next-generation engine it was decided to implement the project in two stages. The first Т-50 prototypes are powered by the 1st stage engine – Product 117. "At present detail design and full-scale design of the engine have been completed (this refers to the 2nd stage engine), special and endurance tests are in progress. The development should be completed in the second quarter of 2015", — the source said.

He noted that the program is on schedule and a bit ahead of the aircraft program.

The source reminded that the meeting of science and engineering board with the participation of all the scientific research institutes, Ministry of Defense of RF and the customer – Sukhoi Holding Company, was held in late 2012. The technical solutions implemented by Design Bureau named after A.M. Lyulka in cooperation with Salut and NPO Saturn during development of the 2nd stage engine’s major components were considered. The solutions offered by the designers allow improving the engine performance and exceeding the parameters specified in the performance specification. "The Product 117 will be the first Russian-produced engine to have a FADEC", — the source said.