
Initially the airline operated air mail services which were subsidized by the Australian government, linking railheads in western Queensland. It flew its first commercial passenger, Alexander Kennedy, on 2 November 1922.
Qantas took delivery of D1 on 30 January 1921. It was assigned a registration mark of G-AUBG, 28 June 1921. The airplane was involved in a serious accident at Ingham, North Queensland, 2 August 1921. It was repaired and returned to service three months later.
Qantas operated it until 6 November 1926, when it was sold to H.J. Taylor, of Hawthorn, Victoria. The airplane was later owned by Matthews Aviation, and finally, by Newcastle Air Service, as Newcastle’s Own. The Avro’s registration was changed to VH-UBG, 28 March 1929. The registration was cancelled 14 April 1932.
Between 1913 and 1932, nearly 9,000 Avro 504-series airplanes were built by more than twenty manufacturers. The Avro 504K was 29 feet, 5 inches (8.996 meters) long with a wingspan of 36 feet (10.973 meters) and height of 10 feet, 5 inches (3.175 meters). Its empty weight was 1,231 pounds (558 kilograms) and the maximum takeoff weight was 1,829 pounds (830 kilograms).
In 1931, the Avro was re-engined with a right-hand tractor, water-cooled, normally-aspirated, 9.005 liter (549.519 cubic inches) A.D.C. (Aircraft Disposal Company, or “Airdisco”) overhead valve (OHV) V-8 engine. The A.D.C. V-8 had a compression ratio of 4.6:1 and was rated at rated at 120 horsepower at 1,800 r.p.m. It had 2:1 propeller gear reduction.

The 504K had a cruise speed of 75 miles per hour (121 kilometers per hour), maximum speed of 90 miles per hour (145 kilometers per hour), service ceiling of 16,000 feet (4,877 meters) and range of 250 miles (402 kilometers).
As of October 2017, Qantas had 29,596 employees. After-tax profit for 2016 was A$1,029,000,000. Qantas currently operates a fleet of 118 aircraft, which includes 28 Airbus A330s and 12 A380s, 10 Boeing 747-400s, 67 B737-800s and 1 787-9. The airline has 45 Boeing 787-9 Dreamliners on order, with confirmed delivery dates for the first 15.

© 2018, Bryan R. Swopes