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The prototype R.B.1, with the designation Iris I, and with the serial number N185, made its maiden flight from Blackburn's factory at Brough on 19 June 1926, being delivered to the Marine Aircraft Experimental Establishment at Felixstowe the next day, being fully tested during July and August.
Mk.2 first flew in November 1969 and was evaluated by the Royal Navy, being allocated the pennant number P235 and aircraft serial number XW255.
The first prototype, serial number 3687, made its maiden flight at Chingford in August 1916, with the second prototype, serial number 3688 following in September.
A Hawker Audax (serial number K7381) of No. 1 Elementary and Reserve Flying Training School, Royal Air Force, based at Hatfield, crashed into a residential area in the Edmonton region of London.
Although scheduled for scrapping in 1961, the Jet Gyrodyne (serial number XD759 later XJ389) survived and today is displayed at the Museum of Berkshire Aviation, on loan from the RAF Museum collection.
G for George is an Avro Lancaster Mk.I bomber, squadron code AR-G and serial number W4783, operated by No. 460 Squadron RAAF during World War II.
The Helicogyre serial number K1171 was completed in 1929 and delivered to the Royal Aircraft Establishment by road.
During the Second World War RAF aircraft that were secret or carrying secret equipment had "/G" (for "Guard") appended to the serial, denoting that the aircraft was to have an armed guard at all times while on the ground, e.g., LZ548/G—the prototype de Havilland Vampire jet fighter, or ML926/G—a de Havilland Mosquito XVI experimentally fitted with H2S radar.
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In 2009 the U.S. FDA published draft guidance for the pharmaceutical industry to use serial numbers on prescription drug packages.
The first SC-1 (XG900) was used until 1971 for VTOL research and is now part of the Science Museum's aircraft collection at South Kensington, London.
The S.5s came 1st and 2nd in the 1927 race held at Venice, the winning aircraft (Serial number N220) was flown by Flight Lieutenant S.N Webster at an average speed of 281.66 mph (453.28 km/h).