What is the tower frequency at RKSO?

The tower frequency at Osan Air Base is 122.1 MHz.

Does RKSO require landing permits?

Yes, landing permits are required for Osan Air Base (Korea, Republic of).

Where is RKSO located?

Osan Air Base (RKSO) is located in Korea, Republic of.

What is the IATA code for RKSO?

The IATA code for Osan Air Base is OSN.

How long is the runway at RKSO?

The main runway at Osan Air Base (09L/27R) measures 2744x46m.

Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer

Osan Air Base (RKSO/OSN) — Korea, Republic of

Osan Air Base (RKSO/OSN) Korea, Republic of. This is a mid-sized airport with 2 runways (09L/27R, 09R/27L). Field elevation is 38 ft AMSL. Data on this page is maintained by the aviation community — contribute to keep it accurate.

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67% Data Complete 35 of 52 points

Missing: Operations, Fuel, Contacts

Section Breakdown

Basic Info 7/7

Runways 4/4

Frequencies 3/4

Operations 0/2

Fuel 0/1

Contacts 0/2

Additional Info 2/10

Observed Activity · Jul 25

2 aircraft observed within 6 NM · busiest hour 04:00Z

2026-07-182026-07-25

Distinct ADS-B aircraft seen within 6 NM below 10,000 ft AGL per UTC day · community-feed coverage varies · not official movement totals

Data last updated: 2026-04-02

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Basic Airport Information

ICAO: RKSO
Name: Osan Air Base
Type: medium_airport
Category: Military
Latitude: 37.090599
Longitude: 127.029999
Elevation: 38 ft
Country: Korea, Republic of
Municipality: N/A
IATA Code: OSN
FAA Code: N/A
FIR: N/A
Timezone: Asia/Seoul
Distance from City: N/A km
VFR: Yes
IFR: No

Runways

Runway 09L/27R

Designation: 09L/27R
Dimensions: 2744x46m
Surface: CON
PCN: N/A
Lighting: Lighted
NAVAIDs: N/A
Approach Types: N/A
Remarks: N/A

Runway 09R/27L

Designation: 09R/27L
Dimensions: 2744x46m
Surface: CON
PCN: N/A
Lighting: Lighted
NAVAIDs: N/A
Approach Types: N/A
Remarks: N/A

Frequencies

Tower: 122.100 MHz
Ground: 132.450 MHz
Operations: N/A
Traffic/Approach: 127.900, 127.900 MHz
ATIS: 132.125 MHz

Operation Hours

Monday N/A

Tuesday N/A

Wednesday N/A

Thursday N/A

Friday N/A

Saturday N/A

Sunday N/A

Extra Hours On Request: No
Remarks: N/A

Contacts

AIS Tel: N/A
ARO Tel: N/A
MET Tel: N/A
Admin Tel: N/A
Health Tel: N/A
Police Tel: N/A
Authorities Tel: N/A
Website: N/A
Remarks: N/A

Slots / PPR

Slot Required: No
PPR Required: No
PPR Contact: N/A
Remarks: N/A

Immigration

Port of Entry: No
GENDEC Required: No
GAR Required: No
Remarks: N/A

Airport Services

No services listed for this airport yet.

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Korea, Republic of Permit Requirements

Medium Landing: 5d

Overflight Permit: Yes
Landing Permit: Yes
Overflight Lead Time: 2 days before intended overflight
Landing Lead Time: 2 business days (official); submit as early as possible

Private / GA Operations:

Private flights require advance notification. Good GA infrastructure at GMP and smaller airports.

View Full Korea, Republic of Permit Details

Active NOTAMs

M1127/26 info

AERODROME HOT CARGO PAD IN USE, PRIMARY HUNG ORDINANCE LOCATION UNAVAILABLE

2026-07-26 00:25:43 Until further notice

M1122/26 info

HOT CARGO PAD IN USE, PRIMARY HUNG ORDINANCE LOCATION UNAVAILABLE

2026-07-25 22:40:48 Until further notice

M1121/26 info

HOT CARGO PAD IN USE, PRIMARY HUNG ORDNANCE LOCATION UNAVAILABLE

2026-07-25 07:15:47 Until further notice

+33 more active NOTAMs

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Nearby Airports

RKSG Camp Humphreys (A-511) Desiderio Army Airfield 8 NM RKSW Suwon Airport 9 NM RKRY Yongin (G-501) Airport 15 NM RKSM Seoul Air Base (K-16) 22 NM RKRN Icheon (G-510) Airfield 22 NM RKRB Bucheon (G-103) Airfield 27 NM RKSS Gimpo Intl 30 NM RKRS Susaek (G 113) Airport 32 NM

Compare RKSO with RKSG side by side →

Airport History

Discover the key milestones and historical events that shaped Osan Air Base. Our community-powered timeline traces this airport's journey from its origins to the present day.

Explore History

Frequently Asked Questions

What is the tower frequency at RKSO?: The tower frequency at Osan Air Base is 122.1 MHz.
Does RKSO require landing permits?: Yes, landing permits are required for Osan Air Base (Korea, Republic of).
Where is RKSO located?: Osan Air Base (RKSO) is located in Korea, Republic of.
What is the IATA code for RKSO?: The IATA code for Osan Air Base is OSN.
How long is the runway at RKSO?: The main runway at Osan Air Base (09L/27R) measures 2744x46m.

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