Habibie started his real career in Germany Aircraft Industries by becoming the Head of Research and Development of Structure Analysis in Hamburg, Germany (1965-1969). Later, he became the Vice President and Technology Director of MBB Gmbh, Hamburg and Munchen (1973-1978), and Technology Senior Advisor to the MBB Board of Directors (1978). While working in Messerschmitt-Bölkow-Blohm (MBB), he conducted many research assignments, producing theories on thermodynamics, construction, and aerodynamics, known as the Habibie Factor, Habibie Theorem, and Habibie Method, respectively.
How long did Habibie work as technology director in Hamburg and Munchen?