The Bristol Type 175 Britannia is a retired British medium-to-long-range airliner built by the Bristol Aeroplane Company in 1952 to meet British civilian aviation needs. During development two prototypes were lost and the turboprop engines proved susceptible to inlet icing, which delayed entry into service while solutions were sought.
Bristol Britannia
The prototype Britannia 101 G-ALBO in BOAC markings at the 1953 Farnborough Air Show
Britannia Airways Britannia Model 102 at Manchester Airport in 1965
Ex-Canadian Pacific Air Lines Britannia Model 314 of Transglobe Airways at Manchester Airport in June 1966
An airliner is a type of airplane for transporting passengers and air cargo. Such aircraft are most often operated by airlines. The modern and most common variant of the airliner is a long, tube shaped, and jet powered aircraft. The largest of them are wide-body jets which are also called twin-aisle because they generally have two separate aisles running from the front to the back of the passenger cabin. These are usually used for long-haul flights between airline hubs and major cities. A smaller, more common class of airliners is the narrow-body or single-aisle. These are generally used for short to medium-distance flights with fewer passengers than their wide-body counterparts.
A United Airlines Boeing 737 (foreground) and a Virgin America Airbus A320 (background), two of the world's most widely used airliners
Sikorsky Ilya Muromets
The Douglas DC-3 appeared in 1935
Prototype of the de Havilland Comet in 1949, the first jet airliner in the world