The 121st FS was established in 1998 at Seosan AB to accept its batch of the newly build block 52 airframes under the Peace Bridge II contract. These block 52 airframes are locally known as KF-16. The squadron was the second of four to equip the newly formed 20th FW.
All RoKAF F-16 squadrons have a dual tasking. In the first place they are equipped with A/A missiles as the AIM-9 and AIM-120 to defend the Korean peninsula against attacks from the north. Secondly they have a dedicated ground-attack mission. Their main equipment for this mission is the LANTIRN targeting pod together with the AGM-65 Maverick missile. This equipment is chosen to counter massive North Korean tank attacks. Furthermore these F-16s are equipped with the advanced ALQ-165 ECM system which is a fully internal passive and active counter measures system. Therefore these aircraft don’t need an external ECM jammer.
In recent years a more differed approach has been followed with some squadrons specializing in a certain task. For the 121st this is SEAD. They employ both he AGM-88 as the AGM-84 in this role. Problem is that the Koreans don't have the HTS pod for the HARM missile nor does the radar have the full SEA mode so both HARM and HARPOON missiles are limited in their utilization. Therefore, Korean units regularly team up with PACAF units who do possess these pods or modes.
RoKAF F-16C block 52 #01-513
from the 20th FW is coming in for landing with its brakes opened on October 21st, 2009. [Scramble
photo by Marco Pennings]