Korea Aerospace Industries (KAI) is assembling five more prototypes of its KF-21 fighter jet after the first prototype was rolled-out on April 9.
The first prototype is currently in the building opposite the assembly line, where its insides are exposed for ground testing which will take another year or so, a report in South Korean media outlet Hankyoreh which was granted access to the assembly line, said.
Of the five prototypes on the assembly line, the second prototype is currently being tested to check whether missiles can be loaded properly.
An image published as part of the exclusive report showed five prototypes in line and engineers working on them. The leading aircraft in the image, presumably the second prototype, looks more complete than the others with its nose cone and wings attached. Missiles are kept next to the aircraft supposedly to conduct loading and unloading tests.