I visited South Korea in November 2003 to collect information on the T-50 cutaway for Korean Aerospace Industries in Sachon.
The Museum is located on the opposite side of the airport from the terminal and is adjacent the KIA factory. Formally located on part of the Sachon Air Force Base, the collection is now owned and operated by KAI and the purpose built site is open to the public. Complete with a “Freedom” and Aerospace Halls, the museum houses 20 aircraft and 3 battle tanks on outdoor display.
It was a fine little museum with an interesting collection of aircraft and well worth a visit. Be advised that this museum is off the beaten track for most tourists and many South Korean school parties visit the museum. The chance to practice their English is an opportunity that most will not miss and you can be caught up in conversations that could take up much of your visit!
Visitors should be aware that Sachon Airport is also an active airbase and is constantly “on alert”, with armed F-4s and other “heavies” constantly screaming up and down the local valleys! As such no photography is allowed from civilian aircraft arriving or departing the airport.