|Type 685 York|
|LV633 Ascalon, Churchill's personal aircraft.|
|First flight||5 July 1942|
|Status||Two examples on display|
|Primary users||Royal Air Force
British South American Airways
|Produced||1943 - 1949|
|Number built||259 (including prototypes)|
|Developed from||Avro Lancaster|
Design and development
Development began in 1941 of the Type 685 which paired the wings, tail and undercarriage of the Lancaster bomber with a new square-section fuselage of much greater capacity. Production was undertaken by Avro with the hopes of sales to the Royal Air Force and in the postwar civil airliner market.
To meet Operational Requirement OR.113 for a transport aircraft Specification C.1/42 was issued to Avro in 1942 and three further prototypes were ordered in different configurations.
The prototype, LV626, was assembled by Avro's experimental flight department at Manchester's Ringway Airport and first flew from there on 5 July 1942. It had initially been fitted with the twin fins and rudders of the Lancaster but the increased fuselage side area forward of the wing compared to the Lancaster necessitated fitting a third central fin to retain adequate control and directional stability. Initial assembly and testing of production Yorks mainly for the RAF, was at Ringway, later Yeadon (Leeds) and Woodford (Cheshire).
One pattern aircraft was built at Victory Aircraft in Canada but no further orders were received. Victory tooled up for 30 aircraft and built parts for five with one ultimately being completed about the time the war came to an end.
The first civilian York (G-AGJA), initially built for the RAF as MW103, was delivered from Ringway to British Overseas Airways Corporation (BOAC) in February 1944. In RAF Transport Command service, the York was used on the England–India route.
Production orders included 50 civilian Yorks and 208 military versions for the RAF – many of which subsequently passed into civilian hands. During the Berlin Airlift, Yorks flew over 58,000 sorties – close to half of the British contribution, alongside the Douglas Dakota and Handley Page Hastings. During the wartime years the York also served as a VIP transport aircraft.
In the postwar years, BOAC used Yorks on their Cairo to Durban service, which had previously been operated by Shorts flying-boats. They were also used by British South American Airways (BSAAC) on their routes to the Caribbean and South America, until their merger into BOAC in September 1949. BOAC's Yorks continued to operate freight schedules until November 1957 when the last example was withdrawn.
After disposal by BOAC and BSAAC, their York fleets were purchased by several UK independent airlines and operated on both passenger and freight flights. These included long-distance trooping flights to Jamaica and other UK garrisons. The last Yorks were retired from service by Skyways and Dan Air in 1964.
When the Distant Early Warning Line (Dew Line) was being constructed in Canada in the late 1950s, the York was introduced as a freighter by Associated Airways. At least one of the Yorks, CF-HAS, was retained, and was in service with Transair as late as 1961.
The Avro York was, like its Lancaster and Lincoln stablemates, a versatile aircraft. One of the prototypes, LV633, Ascalon, was custom-built as the personal transport and flying conference room for Prime Minister Winston Churchill. Ascalon was to be fitted with a special pressurised "egg" so that VIP passengers could be carried without their having to use an oxygen mask. Made of aluminium alloy, the enclosure had eight perspex windows to reduce claustrophobia. It also had a telephone, an instrument panel, drinking facilities and an ashtray with room for cigars, a thermos flask, newspapers and books. Testing at RAE Farnborough found the "egg" to work satisfactorily. Avro said it was too busy with the new Lancaster IV (Avro Lincoln) work so it was never installed in Ascalon. It was considered for installation in the successor aircraft, a Douglas C-54B but the contractor Armstrong Whitworth decided it was impractical and the project was shelved. The whereabouts of "Churchill's Egg" are not known.
MW140, Endeavour, flew to Australia in 1945 to become the personal aircraft of HRH The Duke of Gloucester, Australia's Governor-General. It was operated by the Governor-General's Flight from 1945 to 1947; it was the Royal Australian Air Force's only York.
Another York, MW102 was fitted out as a "flying office" for the use of the Viceroy of India and C-in-C South East Asia Command, Lord Mountbatten. During its first major overhaul by Avro at Manchester (Ringway) in 1945, the aircraft was repainted a light duck egg green, a shade intended to cool down the aeroplane, instead of its former normal camouflage colour scheme.
Air Chief Marshal Sir Trafford Leigh-Mallory was killed on 14 November 1944, while flying to his new posting in Ceylon to take command of Allied air operations in the Pacific, when York MW126 struck a ridge in the French Alps in a blizzard, 30 miles (48 km) south of Grenoble, France. His wife Dora and eight aircrew also died. The wreckage was found by a villager in June 1945.
- Avro 685 prototypes
- LV626 - prototype first flown with twin-tail and later converted to C.II standard
- LV629 - prototype fitted with passenger seats
- LV633 - prototype fitted as a flying conference room, later used by Winston Churchill
- LV639 - prototype fitted as a paratroop drop variant with a drop hatch in the floor
- York I
- Four-engined civilian transport aircraft, 44 built
- York C.I
- Four-engined military transport aircraft for the RAF, 208 built by Avro and one by Victory Aircraft.
- York C.II
- One prototype York aircraft fitted with four Bristol Hercules XVI radial piston engines.
- Royal Australian Air Force
- Aeroplane and Armament Experimental Establishment (Boscombe Down)
- Airborne Forces Experimental Establishment (Beaulieu)
- Royal Aircraft Establishment (Farnborough)
- Royal Air Force
- No. 24 Squadron RAF 1943-1951 at various bases in England
- No. 40 Squadron RAF 1947-1950 (RAF Abingdon, England)
- No. 51 Squadron RAF 1946-1950 at various bases in England
- No. 59 Squadron RAF 1947-1950 (RAF Abingdon, England)
- No. 99 Squadron RAF 1947-1949 (RAF Lyneham, England)
- No. 206 Squadron RAF 1947-1950 (RAF Lyneham, England)
- No. 232 Squadron RAF
- No. 242 Squadron RAF 1945-1949 at various bases in England
- No. 246 Squadron RAF 1944-1946 (RAF Holmsley South, England)
- No. 511 Squadron RAF 1943-1949 (RAF Lyneham, England)
- No. 241 Operational Conversion Unit RAF (RAF Dishforth, England)
- Air Command South East Asia Communications Squadron (RAF Ratmalana, Ceylon)
- Air Transport Tactical Development Unit (RAF Netheravon, England)
- Empire Air Navigation School (RAF Shawbury, England)
- Far East Communications Squadron (RAF Changi, Singapore)
- Metropolitan Communications Squadron (RAF Hendon, England)
- Transport Command Development Unit
- Transport Command Examining Unit
- 1310 Flight RAF (RAF Upavon, England)
- 1359 Flight RAF (RAF Lyneham then RAF Bassingbourn, England)
- 1332 Heavy Conversion Unit at various bases in England and Northern Ireland
- Telecommunications Research Establishment (Defford, England)
Media related to Avro York museum aircraft at Wikimedia Commons
While there are no flying examples of the Avro York, there are two complete examples on display. Currently at the RAF Museum Cosford Collection is Avro 685 York C1, TS 798 (cn 1223) which was initially intended for the RAF as TS 798, but quickly passed to BOAC as G-AGNV and later to Skyways. It was previously preserved at Skyfame (Staverton), Brize Norton and Shawbury.
Another example on public display is held at the Imperial War Museum Duxford: Avro 685 York C1, G-ANTK is an ex-Dan Air London aircraft. This airframe was built at Yeadon, near Leeds, in January 1946 and entered RAF service with 242 Squadron as MW 232 that August. It joined the fleet of Allied aircraft engaged in the Berlin Airlift and in May 1947, the York moved to 511 Squadron at Lyneham, where it served until May 1950 when it was used by Fairey Aviation for flight refuelling research. It then retired to 12 Maintenance Unit at Kirkbride for storage prior to disposal. In July 1954, MW 232 became G-ANTK with Dan Air and it was used for freight work until its retirement in May 1964. It was ferried to Lasham Airfield and used as a bunk house by the local Air Scouts until 1974. The Dan Air preservation group took it over and began to restore the aircraft in their spare time. In the mid-1980s, Dan Air realised the impracticality of the restoration work being undertaken and began negotiations with the Duxford Aviation Society. In May 1986, the aircraft was dismantled and on 23 May made its journey to Duxford on seven low-loaders.
Accidents and incidents
Main article: List of accidents and incidents involving the Avro York
The Avro York had 87 hull-loss accidents or incidents with the following list of accidents involving fatalities and major hull-losses. This information is primarily derived from: Piston Engine Airliner Production List (1991)  and Aviation Safety Network.:
Specifications (Avro York)
Data from Jane's Fighting Aircraft of World War IIGeneral characteristics