High Quality Content by WIKIPEDIA articles! The Handley Page W8, W9 and W10 were British two- and three-engine medium-range biplane airliners designed and built by Handley Page. The W8 (also known as the H.P.18) was the company's first civil transport aircraft. It housed two crew in an open cockpit and a cabin for 15 passengers. Powered by two 450 hp (336 kW) Napier Lion engines the prototype first flew on 4 December 1919, shortly after is was displayed at the 1919 Paris Air Show at Le Bourget. It has the doubtful distinction of being the world's first airliner to be designed with an on- board lavatory. The W8 was subsequently revised to give the W8b, W8e (H.P.26), W9 (H.P.27) and W10 (H.P.30). To meet an Air Ministry ruling the capacity was reduced to 12 passengers and the fuel tanks were moved. In 1921 the Air Ministry ordered three aircraft for use by Handley Page Transport. These were built as the W8b and powered by the Rolls Royce Eagle IX and operated by Imperial Airways on services to Paris and Brussels. One other aircraft was delivered to SABENA in 1924 and three others were licensed built by SABCA in Belgium.

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