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RAF Charmy Down
USAAF Station AAF-487

Ensign of the Royal Air ForcePatch9thusaaf
High oblique photo of RAF Charmy Down, taken 20 October 1943 looking southwest to northheast.
IATA: none – ICAO: none
Airport type Military
Owner Air Ministry
Operator Royal Air Force
United States Army Air Forces
Location North of Swainswick, Somerset
Built 1941 (1941)
In use 1941-1946 (1946)
Elevation AMSL 669 ft / 204 m
Coordinates 51°25′46″N 002°20′50″W / 51.42944°N 2.34722°W / 51.42944; -2.34722Coordinates: 51°25′46″N 002°20′50″W / 51.42944°N 2.34722°W / 51.42944; -2.34722
Somerset UK location map
Airplane silhouette.svg
RAF Charmy Down
Location in Somerset
Direction Length Surface
ft m
02/20 2,800 850 Asphalt
08/26 4,350 1,330 Asphalt
14/32 4,050 1,230 Asphalt

Royal Air Force Station Charmy Down or more simply RAF Charmy Down is a former Royal Air Force station in Somerset, England. The airfield is located approximately 3 miles (4.8 km) north-northeast of Bath; about 96 miles (154 km) west of London

Opened in 1941, it was used by both the Royal Air Force and United States Army Air Forces. During the war it was used primarily as night fighter interceptor airfield. After the war it was closed in 1945.

Today the remains of the airfield are located on private property being used as agricultural fields.


Built on a Kerbed Long barrow site, where a cremation urn was found, near a burial of a long necked beaker, and a bronze dagger, these are believed to be from the Beaker people.[1] The Kerbed Long Barrows were then flattened to make way for the base.

It was originally planned as a satellite for the Maintenance Unit at RAF Colerne but by the time construction work started in 1940 it had been selected as a sector station by No. 10 Group of RAF Fighter Command.[2]

RAF Charmy Down was opened late in 1940 and originally had a grass surface with landing strips of 4,125 feet (1,257 m), both south-east to north-west and north-east to south-west. It was later upgraded to the Class A airfield standard set by the British Air Ministry in 1941, the main feature of which was a set of three converging runways each containing a concrete runway for takeoffs and landings, optimally placed at 60 degree angles to each other in a triangular pattern. In addition a 50 feet (15 m) wide tarmac perimeter track and 39 aircraft dispersal points was constructed. These were 12 double pens and 15 single standings.[2]

The technical site, connected to the ground station and airfield consisted of 12 Blister hangars and one Bellman hangar and various organisational, component and field maintenance shops along with the crew chiefs and other personnel necessary to keep the aircraft airworthy and to quickly repair light and moderate battle damage.[3] Depot personnel performed depot-level maintenance on aircraft as well as performing major structural repair on severely damaged combat aircraft. The Ammunition dump was located on the north side of the airfield, outside the perimeter track surrounded by large dirt mounds and concrete storage pens for storing the aerial bombs and the other munitions required by the combat aircraft.

Royal Air Force useEdit

The first occupants of Charmy Down was No. 87 Squadron RAF, with night-fighting Hawker Hurricanes, Then, in the summer of 1941, Boulton Paul Defiants appeared and Westland Whirlwinds and Turbinlite Havocs of 125 and 263 squadrons respectively were to be seen the following year. 137 Squadron replaced 263 Squadron in September 1941. In November 417 Squadron of the Royal Canadian Air Force was formed at Charmy Down.[2]

During 1942 various other squadrons were based at Charmy Down including 533 Squadron which was formed on 8 September 1942,[4] from No. 1454 (Turbinlite) Flight,[5][6] as part of No. 10 Group RAF in Fighter Command. Instead of operating only Turbinlite and -rudimentary- Airborne Intercept (AI) radar equipped aircraft (Havocs and Bostons) and working together with a normal nightfighter unit, such as in their case with the Hawker Hurricanes of 87 Squadronin the Flight,[5] the unit now also flew with their own Hurricanes. It was disbanded at Charmy Down on 25 January 1943,[4] when Turbinlite squadrons were, due to lack of success on their part and the rapid development of AI radar, thought to be superfluous.[7]

A Supermarine Spitfire Operational Training Unit took over in 1943 and stayed until the airfield was turned over to the USAAF in November 1943.[2]

United States Army Air Forces useEdit

World War Two Building Charmy Down

Remains of the aircraft Shooting-in Butt used to test the installed guns. Taken in 2010

Charmy Down was known as USAAF Station AAF-487 for security reasons by the USAAF during the war, and by which it was referred to instead of location.[8] It's USAAF Station Code was "CH".

4th Tactical Air DepotEdit

Service groups were deployed there late in 1943 to operate the 4th Tactical Air Depot, which was intended to repair, modify and maintain Allison-engined fighter types, primarily Lockheed P-38 Lightnings and North American P-51 Mustangs. For unrecorded reasons, it was decided to transfer this operation to Kingston Bagpuize early in 1944, possibly for better local logistics and communications in the Oxford area. Nevertheless, IX Air Force Service Command activities continued at Charmy Down until the autumn of 1944.[9]

422d, 423d and 425th Night Fighter SquadronsEdit

The Ninth Air Force was scheduled to receive three night fighter squadrons with a mission to effect night air defence of US air bases when these were established on the Continent. Charmy Down was selected as a base for these squadrons which would arrive individually, not as part of a group, and were to be equipped with the new Northrup P-61 Black Widow.[10]

Personnel of the 422d Night Fighter Squadron arrived first on 7 March 1944 and had their aircrews posted to various RAF night fighter and signal schools for theatre indoctrination. Meanwhile, as there was no sign of the P-61s. the pilots kept up their flight time on Cessna UC-78s and other communication types.

On 18 April, the men of the 423d Night Fighter Squadron joined the 422nd at Charmy Down and their aircrew also undertook training at RAF installations white the wait for P-61s continued. On 6 May the 422nd NFS was sent to the RAF night fighter Operational Training Unit at RAF Scorton in North Yorkshire where they eventually received the first of their Black Widows later that month.

Meanwhile, the 423rd NFS continued to wait for aircraft at Charmy Down. As its aircrews had trained in the United States on the Douglas P-70, (the night-fighter version of the Douglas A-20 Havoc), in the absence of sufficient P-61s, the Ninth Air Force decided to use the 423rd personnel to form a night photographic unit equipped with A-20s. To this end, the 423rd NFS was assigned to the 10th Reconnaissance Group on 10 May and was redesignated as the 155th Photographic Reconnaissance Squadron. The squadron was transferred to RAF Chalgrove.

Soon after, on 26 May the third night fighter squadron, the 425th Night Fighter Squadron arrived at Charmy Down and underwent the same preliminary training as the 422d and 423d squadrons. On 12 June the squadron left to join the 422nd NFS at RAF Scorton where its aircrews were able to fly the P-61.

The original plan had been for all three night fighter squadrons to be on combat status with P-61s by D-Day, due to lack of equipment none of the squadrons or P-61s were ever based at Charmy Down.

Postwar useEdit

After the end of hostilities in Europe, there was little flying from the station although it was not officially closed until October 1946. From the January 1946 to October 1946, 92 Gliding School, Air Training Corps, also used as Personnel Resettlement Centre for Australians.[2]

In the 1950s, Charmy Down was included on a list of sites for the deployment of the ROTOR radar system; only preparatory work for the radar bases was ever completed.

Current useEdit

Control Tower, Charmy Down near Bath

The old control tower in 2010

With the facility released from military control, the airfield stood intact yet disused for many years.[2] Eventually the hangars and runways were removed, but the outline of the runways can still be seen in aerial photography. Most of the perimeter track still remains mostly in a half-width condition, as do several of the derelict buildings, including the control tower,[11] a few of the Blister hangars still remain and are used for farm storage.

Bath and North East Somerset Council has considered, but rejected, the option of building a Park and Ride for Bath on Charmy Down.[12]

See alsoEdit


PD-icon.svg This article incorporates public domain material from the Air Force Historical Research Agency website


  1. "The Beaker people and the Bronze Age". Somerset County Council. Retrieved 22 January 2011. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Berryman, David (2006). Somerset airfields in the Second World War. Newbury: Countryside Books. pp. 34–49. ISBN 1-85306-864-0. 
  3. "Charmy Down Airfield 2008". Aviation Addicts. Retrieved 20 January 2013. 
  4. 4.0 4.1 Jefford 1988, p. 97.
  5. 5.0 5.1 Rawlings, John D.R. Fighter Squadrons of the RAF and their Aircraft. London: Macdonald & Jane's (Publishers) Ltd., 1969 (2nd edition 1976, reprinted 1978). ISBN 0-354-01028-X. page 465
  6. Sturtivant 2007, p. 123.
  7. Halley 1988, p. 402.
  8. "United States Army Air Force Station Numbers". GI trace. Retrieved 20 January 2013. 
  9. Wakefield, Ken (1994). Operation Bolero: The Americans in Bristol and the West Country 1942-45. Crecy Books. p. 62. ISBN 0-947554-51-3. 
  10. Bishop, Chris (2002). The Encyclopedia of Weapons of WWII: The Comprehensive Guide to Over 1,500 Weapons Systems, Including Tanks, Small Arms, Warplanes, Artillery, Ships,. MetroBooks. p. 358. ISBN 978-1586637620. 
  11. "Charmy Down". Control Towers UK. Retrieved 22 January 2011. 
  12. "Guildhall protest over Bathampton park and ride plan". Bath Chronicle. 8 November 2008. Retrieved 25 January 2011. 


  • Freeman, Roger A. (1994) UK Airfields of the Ninth: Then and Now. After the Battle ISBN 0-900913-80-0
  • Halley, James J. The Squadrons of the Royal Air Force & Commonwealth, 1981-1988. Tonbridge, Kent, UK: Air-Britain (Historians) Ltd., 1988. ISBN 0-85130-164-9.
  • Jefford, C.G, MBE,BA ,RAF (Retd). RAF Squadrons, a Comprehensive Record of the Movement and Equipment of all RAF Squadrons and their Antecedents since 1912. Shrewsbury, Shropshire, UK: Airlife Publishing, 1988. ISBN 1-84037-141-2.
  • Maurer, Maurer (1983). Air Force Combat Units Of World War II. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0-89201-092-4.
  • Sturtivant, R. RAF Flying Training and Support Units since 1912. Air Britain, 2007. ISBN 0-85130-365-X.

External linksEdit

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