TEI Engine in the Sky... TEI and GE Aviation make Turkey an Advance Technology Base: Turkiye Technology Center is established       SIX SIGMA Source of TEI's inspiration on the road of excellence. AWARDS AND CERTIFICATES AS/EN9100-Quality Management System is the evidence of world class quality design.       PROJECTS TEI participates in international projects with industry leaders in aerospace. CAPABILITIES State of the art design and analysis capabilities with highly talented engineering workforce.