DND photo.

During World War I, the US Army Air Service bought 52 504Ks for its flying schools in France. Seven were shipped to the US postwar and given Air Service serials. This was one of them. Photo from: The Herman Butler Collection/The Museum of Flight

Imagine flying a strategic air raid in an Avro 504. It happened in November 1914 when three machines took off from Belfort with four 20-lb bombs each to attack the Zeppelin works in Friedrichshafen on Lake Constance, 200 km (125 miles) away. Although the raid was an RNAS affair, the planes were RFC serials 873, 874 and 875. RFC 179 failed to get airborne. Some of the pilots had never flown a 504 before. 873 was shot down and Squadron Commander Edward Briggs was taken prisoner. The raid caused little damage, but was successful in that the Germans took extensive defensive measures. Belfort - Fontaine was then an airship station. Photo from: KB - National Library of the Netherlands

Believed to be the day the photographer, Arnold McDonald, had his first flight as recorded in his diary. Photo from: Air Force Museum of New Zealand

J8504 crashed September 5, 1932 landing at RAF Cranwell. 601 Squadron was the City of London reserve unit nicknamed the millionaires; squadron foe its wealthy members. Photo from: Imperial War Museums

Identity unknown. Carries 'Aviaçao Açores' title.

Photo from: Imperial War Museum

Registered 11 September 1930 and cancelled -1 January 1939. Ex G-ABAA, 'H2311', 9244M. On loan from the RAF Museum to the Stow Maries Great War Aerodrome collection.

The RAAF Museum's Avro 504K is a replica constructed from the original drawings by Hawker Restorations in the UK in 1999 using original fittings, instruments and Le Rhône engine. It is flyable and was registered G-BYKV. Painted as E3747, it represents one of the 20 received by the Australian Flying Corps in 1919 for the Central Flying School. Only one original Australian Avro 504 survives, E3-4 which was placed at the Australian War Memorial near Canberra as long ago as 1929

This is a non-flying replica built by Qantas. It is of the airline's first aircraft . That was an Australian made 504K fitted with a Sunbeam Dyak engine. Became G-AUBG. and later VH-UBG. Withdrawn from use in 1932. In 1965 Qantas fitted a Dyak engine to a borrowed 504K, A3-4, owned by the Australian War Memorial. It was painted like the replica. Returned in 1987 with its rotary engine refitted and in RAAF markings. Qantas by then had built two replicas of G-AUBG, one of which is pictured.

Registered in November 2002. Tony Arbon photo

Built in 2010 in Argentina and registered LV-X430. This is the second Avro 504K replica built by Pur Sang Aero Historic. To the British register as G-EROE on 16 Feb 2016. Based at Sywell. The aircraft is named Olivia. Still current in 2024.