Korean Aerospace Industries
KT-1 Ungbi (KT-1 웅비)
Advanced trainer / Light attack

KT-1 is a Korean basic training aircraft for pilots. It was jointly developed by KAI and the ADD in a project that began in 1988. The plane was the first in its class to be designed entirely by a computer, and is South Korea's first indigenous aircraft developed using exclusive domestic technologies.

KAI exported seven planes plus spare parts to Indonesia in April 2003 under a 60 million USD contract. In 2006, Indonesia purchased 12 more KT-1s and spare parts. In a recent press release held in Sacheon, South Korea on March 8th, 2006, KAI stated that it will export more than 150 improved versions of the KT-1 to various countries in Central America and Southeast Asia. The improved export version of the KT-1 will be called XKT-1. As of June, 2007, South Korea and Turkey have successfully negotiated for a contract of exporting 30 KT-1, as well as K2 Black Panther, to Turkey for KRW₩500,000,000,000 (approximately USD$540,000,000).

An armed variant of the KT-1 has been dubbed the KO-1. It includes 14 rounds of 2.75" external rockets and two 50 gallon exterior fuel tanks and is currently in service with the South Korean Air Force.