From 1988 to 2007 he worked as a Professor of the Korea Aerospace University (KAU).
From 2000 to 2006 he was the President of the Korea Aerospace University.
From 1999 to 2009 he was the President of the Korea Society of Air & Space Law and Policy.
From 2009 to present he is the Honorary President of the Korea Society of Air & Space Law and Policy.
At present time he is the Vice-president of the Federation of Korea Aeronautics.
He has an award of Prime Minister of the Republic of Korea.
He has a medal for his achievements in the field of industry.
He is a member of the European Air Law Association (EALA).