Second Prototype of Turkey’s TEI-TS1400 Helicopter Engine Gets Going arif2021-01-12T15:56:46+00:00 September 26, 2020 @ 06:13 AM Turkey's first indigenous multirole helicopter, the T625 Gökbey, Second Prototype of Turkey’s TEI-TS1400 Helicopter Engine Gets Goingarif2021-01-12T15:56:46+00:00