Drafted — not technically validated
Record revision 1 · Guam's international airport on the site of Naval Air Station Agana, with two long parallel runways.
A real-world airfield as described in public sources, and how sim maps represent it. Units, facilities and names change; each is dated where the sources allow, and the charts are not for navigation. Use current official publications for flight planning.
Location and identity
- Location
- Tamuning and Barrigada, Guam, 3 miles north-east of Tamuning and east of the capital, Hagåtña [1] [2]
- Country or territory
- Guam (US territory)
- Coordinates
- 13.4840° N, 144.7971° E [2]
- Elevation
- 305 ft (93 m) [2]
- Identifiers
- ICAO PGUM · IATA GUM · FAA GUM
- Other names
- Opened
- about 1943, built by the Imperial Japanese Navy as Guamu Dai Ni [1]
- Theatre
- East Asia and the Pacific
Role and operators
- Status
- Active · Civil
- Roles today
- Civil airport
- Operators
- A.B. Won Pat International Airport Authority, Guam, an agency of the Government of Guam · Guam (US territory), civil · current; start date not given [1] [2]
- US Navy, Naval Air Station Agana, closed by the 1993 Base Realignment and Closure round · United States, navy · 1947 – Apr 1995 [1]
- US Army Air Forces · United States, air force · 1944–1947 [1]
- Imperial Japanese Navy · Japan, navy · 1943–1944 [1]
Units
Permanently based units belong to the airfield; rotational and temporarily deployed units are there for a period or an operation. Dates are when the sources place each unit there; "as of" is when a source described it as current.
Earlier
11th Bombardment Group, Seventh Air Force [1]
- Service
- United States, air force
- Basing
- Permanently based
- Aircraft
- B-24 Liberator
- When
- Oct 1944 – Jul 1945
41st Photographic Reconnaissance Squadron [1]
- Service
- United States, air force
- Basing
- Permanently based
- Aircraft
- F-5 Lightning
- When
- Jul 1945 – Jan 1946
21st Fighter Group and 549th Night Fighter Squadron, for the air defence of the Marianas [1]
- Service
- United States, air force
- Basing
- Permanently based
- When
- until 1947
Runways and facilities
From data effective Oct 2026. Facilities not listed here are not documented in the sources cited, which does not mean the airfield lacks them.
| Runway | Length | Width | Surface |
|---|---|---|---|
| 06L/24R [2]runway 06L has a 1,000 ft displaced threshold, a MALSR approach light system and a PAPI | 12,014 ft (3,662 m) | 150 ft (46 m) | asphalt and concrete |
| 06R/24L [2] | 10,014 ft (3,052 m) | 150 ft (46 m) | asphalt and concrete |
- Arresting gear
- None documented in the sources cited
- Navaids
Figure 1 — Airfield map of Antonio B. Won Pat International Airport (to scale)
- Runway
- Taxiway, with its name
- Apron
- Hangar or terminal
- Airfield boundary
Runways, taxiways, aprons and buildings inside the airfield boundary, true north up, drawn from OpenStreetMap data retrieved 2026-11-01. Widths come from the map data or, where it gives none, a typical 45 m runway and 18 m taxiway. Map data © OpenStreetMap contributors, available under the ODbL 1.0. Community-mapped, not an official aerodrome chart, and not for navigation.
Sim maps
Represented in: DCS: Marianas
DCS: Marianas DCS World · Present day
Represented as “Antonio B. Won Pat Intl” · checked 2026-11-01 [3]
- Runways 06L/24R and 06R/24L [3]
- Tower 118.1 MHz VHF and 340.2 MHz UHF [3], the frequencies the FAA lists for Agana Tower [2]
- ILS approaches IGUM (110.3 MHz) and IAWD (110.9 MHz), both listed for runway 06L [3]
Differences from the real airfield
Only the maps marked represented or confirmed absent have been checked. Any other map may or may not represent this airfield.
Other maps in East Asia and the Pacific, not yet checked for this airfield, which may lie outside them: DCS: Marianas 1944, Falcon BMS: Korea, Falcon 4.0: Korea.
Role today
Antonio B. Won Pat International, also called Guam International Airport, is the only international airport in the territory, a hub for United Airlines and the main cargo hub of Asia Pacific Airlines. [1] It is run by an agency of the Government of Guam and named for Antonio Borja Won Pat, Guam’s first delegate to the US House of Representatives. [1] It occupies the site of the former Naval Air Station Agana. [1] The island’s other main airfield is Andersen Air Force BaseAndersen Air Force Base AirfieldGuam's bomber base: B-29s against Japan, B-52s over Vietnam and today the forward base for the heavy bombers in the Western Pacific..
History
The Imperial Japanese Navy built the airfield in about 1943 as Guamu Dai Ni, Guam No. 2, for the defence of the Marianas. [1] After US forces retook Guam in 1944 it became Agana Airfield; Seabees repaired it in October 1944, and B-24s of the 11th Bombardment Group flew from it until July 1945, followed by F-5 Lightning reconnaissanceReconnaissance GlossaryJoint terms: A mission undertaken to obtain, by visual observation or other detection methods, information about the activities and resources of an enemy or adversary, or to secure data concerning the meteorological, hydrographic, or… aircraft and then fighters defending the islands. [1] The US Navy took over in 1947 and ran Naval Air Station Agana, absorbing the facilities of the closing Harmon Air Force Base in 1949. [1]
Civil travel to Guam needed a security clearance until 1962, and the first International Air Terminal opened in March 1967. [1] NAS Agana was closed in April 1995 under the 1993 base closure round, and the airport authority took over the whole field. [1]
The airfield
Two parallel runways, 06L/24R, 12,014 ft long, and 06R/24L, 10,014 ft, both with ILS approaches from the south-west. [2] The FAA lists runway gradients of up to 0.8%, and terrain rises close to the runway 24L threshold. [2]
Sources
- Antonio B. Won Pat International Airport. Wikipedia (secondary source). https://en.wikipedia.org/wiki/Antonio_B._Won_Pat_International_Airport (accessed 2026-11-01).
- Airport data: GUM (PGUM), Guam Intl. Federal Aviation Administration, Aeronautical Information Services, data effective 29 October – 26 November 2026. https://nfdc.faa.gov/nfdcApps/services/ajv5/airportDisplay.jsp?airportId=GUM (accessed 2026-11-01).
- dcs-world-schema reference data: Mariana Islands airbases (Antonio B. Won Pat Intl.json). dcs-world-schema, open-source data extracted by running DCS World 2.9.30.28536. https://github.com/YoloWingPixie/dcs-world-schema/blob/c3091e6c08fb8167e26145d0e33c10e4140c6fe7/dcs-world-reference/latest/airbases/MarianaIslands/Antonio%20B.%20Won%20Pat%20Intl.json (accessed 2026-11-01). With its beacon files, as tabled on the DCS: Marianas map page.
Wikipedia articles are secondary sources and can change; they are cited with the date they were read. FAA airport data and diagrams are official but are reissued every 28 or 56 days; each is cited with the edition read. pydcs mirrors the DCS terrain data at the commit linked.