The Osan Terminal Control Area is an American run TCA that is composed of 2 joint South Korean-American air bases (RKSW and RKSO) and 1 Army Air Field (RKSG). Phraseology is all FAA phraseology per the US Order 7110.65. Please see the XA Division's Guide to FAA Phraseology to control this area. Please note that altimeter settings are given in inches (Altimeter 2992) and are given in the IVAC METAR and ATIS, so no conversion is necessary.
Terminal Control Area
ATC Positions
| Sector Position | Callsign | Frequency | Coverage Area |
|---|---|---|---|
| Osan Approach/Departure | RKSO_APP | 127.900 | Covers entire TCA and airports when other positions offline |
| Osan Tower | RKSO_TWR | 122.100 | Tower controller at RKSO |
| Osan Ground | RKSO_GND | 132.450 | Ground controller at RKSO |
| Osan Clearance | RKSO_DEL | 127.300 | Clearance Delivery at RKSO |
| Desiderio Tower | RKSG_TWR | 122.500 | Tower controller at RKSG |
| Desiderio Ground | RKSG_GND | 119.500 | Ground controller at RKSG |
| Suwon Tower | RKSW_TWR | 126.200 | Tower controller at RKSW |