Naval Air Station Atsugi

Naval Air Station Atsugi
Yamaguchi Yoshiaki from Japan · CC BY-SA 2.0 · source
Name	Naval Air Station Atsugi
Native name	厚木飛行場
Location	Ayase, Kanagawa; Yamato, Kanagawa; Zama, Kanagawa; Ebina, Kanagawa
Country	Japan
Coordinates	35°26′N 139°28′E
Operator	United States Navy; Japan Maritime Self-Defense Force
Used	1940–present
Elevation	40 ft
Runways	18/36: 2,599 m; 07/25: 2,599 m

Naval Air Station Atsugi

Naval Air Station Atsugi is a joint United States Navy and Japan Maritime Self-Defense Force airbase in Kanagawa Prefecture, Japan, located near Tokyo and adjacent to cities including Yokohama, Kawasaki, Sagamihara, and Yokosuka. Established during the late Empire of Japan period and expanded under United States Armed Forces administration after World War II, the facility has hosted aircraft types from Douglas A-4 Skyhawk to Boeing F/A-18E/F Super Hornet and rotary-wing platforms such as the Sikorsky UH-60 Black Hawk. The base plays roles in regional power projection, bilateral Japan–United States relations, and multinational exercises like Exercise Keen Edge and RIMPAC.

History

Atsugi began as an Imperial Japanese Navy airfield in 1940 during the Second Sino-Japanese War era, with construction influenced by officers aligned with figures like Isoroku Yamamoto and planners from the Ministry of the Navy (Japan). Following Japan’s surrender in 1945 after the Surrender of Japan, U.S. forces, including elements of United States Army Air Forces and later the United States Navy, occupied the site, repurposing hangars and runways to support operations in the early Occupation of Japan. During the Korean War, Atsugi hosted Douglas A-20 Havoc and Grumman F9F Panther types for sorties and logistics supporting United Nations Command efforts. The Cold War era saw deployments tied to contingencies involving the People's Republic of China, the Soviet Union, and crises such as the Second Taiwan Strait Crisis. In the post–Cold War period, Atsugi supported humanitarian responses after events like the Great Hanshin earthquake and the 2011 Tōhoku earthquake and tsunami, coordinating assets from Carrier Air Wing elements, U.S. Seventh Fleet, and JSDF units.

Facilities and Infrastructure

The station comprises dual runways, multiple hangars, maintenance depots, fuel farms, and a control tower renovated to NATO-standard procedures used by U.S. Pacific Fleet aviators and JMSDF technicians. Support facilities include an aircraft maintenance complex servicing platforms such as the Northrop Grumman E-2 Hawkeye, Lockheed P-3 Orion, and Grumman C-2 Greyhound, with avionics shops influenced by contractors like Boeing and Northrop Grumman. Barracks, family housing, medical clinics often coordinate with United States Forces Japan and municipal services from Kanagawa Prefecture authorities. Maritime access is provided via proximity to the Port of Yokohama and logistical routes linking to Naval Base Yokosuka and Tokyo Bay infrastructure projects.

Units and Operations

Atsugi hosts a mix of U.S. Navy squadrons, JMSDF detachments, and joint support commands, including carrier-based patrol and logistic support coordinated with Carrier Strike Group. Units historically and operationally linked to the station include air wings that deploy from USS Ronald Reagan (CVN-76), USS George Washington (CVN-73), and associated carrier strike groups operating under United States Indo-Pacific Command. Operations have ranged from antisubmarine warfare with platforms tied to Submarine Force Atlantic doctrines, intelligence, surveillance and reconnaissance pairing with sensors from Lockheed Martin, to search and rescue missions coordinated with Japan Maritime Self-Defense Force Air Rescue Wing. Training exchanges have involved personnel from Royal Australian Navy, Royal Air Force, Republic of Korea Navy, and other regional partners.

Controversies and Incidents

Atsugi has been the focus of bilateral disputes and local protests related to noise, safety, and jurisdictional issues between United States Forces Japan and Japanese municipal governments including Kanagawa Prefecture and cities such as Ayase and Yokosuka. High-profile incidents include aircraft mishaps involving types like the F/A-18 Hornet and F-35 Lightning II during regional operations, prompting investigations referencing aviation safety boards such as those modeled on National Transportation Safety Board procedures. Legal cases and demonstrations have cited agreements including the Status of Forces Agreement (SOFA) and drawn attention from lawmakers within the National Diet (Japan), municipal assemblies, and advocacy groups like local residents’ associations. Security concerns during events such as September 11 attacks aftermath and Operation Tomodachi responses also heightened scrutiny over operational transparency.

Environmental and Community Impact

Environmental assessments have examined impacts on local wetlands, air quality, and noise contours affecting schools and hospitals in municipalities like Ebina and Yamato. Studies referencing methodologies used by agencies such as the United States Environmental Protection Agency and Japan’s Ministry of the Environment (Japan) addressed fuel storage, runoff, and contamination mitigation involving contractors linked to Environmental Protection Agency Superfund-style remediation frameworks. Community relations initiatives have included town-hall meetings with representatives from United States Forces Japan, the Ministry of Defense (Japan), school boards, and municipal welfare offices to address health concerns, compensation schemes, and noise abatement procedures.

Future Development and Strategic Role

Debates over consolidation, relocation, and enhancement of capabilities at the station tie into broader strategic planning within United States Indo-Pacific Command and Japan’s defense posture articulated by the Ministry of Defense (Japan), referencing shifts after the 2015 Defense Cooperation Guidelines. Proposals have considered force posture realignment involving Marine Corps Base Camp Butler, redistribution of carrier support functions to Naval Air Facility Atsugi-adjacent sites, and infrastructure investments influenced by allied procurement of platforms such as the F-35B Lightning II and unmanned systems from manufacturers like General Atomics. Regional contingency planning involving partners including Australia–Japan–United States trilateral frameworks and bilateral exercises with Republic of Korea will shape the station’s role in deterrence, humanitarian assistance, and joint operations.

Category:Airports in Kanagawa Prefecture Category:United States military installations in Japan