the H.P.42W (W for "Western" i.e. European routes). The H.P.42 and H.P.45 designations were internally assigned by Handley Page, thus the HP.45 identifier was not commonly used during the flying lives of the aircraft. Several efforts have been mooted to produce additional H.P.42s for heritage/preservation purposes. During 2015, a fundraising campaign was launched with the aim of producing a replica of the H.P.42. As there are no surviving examples, a replica must be somewhat original in construction, although authentic blueprints and other source material from the era is available for use in its construction. While it is planned for the replica to be built to an airworthy condition, various safety regulations would prevent the carriage of paying passengers. Design The Handley Page H.P.42 was a large unequal-span sesquiplane. It was a relatively unorthodox aircraft, even beyond its size, having incorporated numerous original features throughout its design. As observed in an official evaluation by the American National Advisory Committee for Aeronautics (NACA), amongst the uncommon elements included is a fuselage which extended more forwards beyond its wings than that of most contemporary aircraft. It used an all-metal approach in its construction, except for a few areas such as the fabric coverings present on the wings, tail surfaces and rear fuselage. The fuselage comprises two sections, the forward section being a metal monocoque and the rear formed from welded steel tubes; their construction was noted as seemingly quite strong, but also relatively expensive. The wings were braced by a Warren truss. Automatic slots are fitted to the top wing, the auxiliary airfoils of which benefiting from a new construction approach involving single z-section spars and planking, both composed of duralumin. Slot-type ailerons are also present, each being installed upon four hinges and supported by four box-section brackets; these ailerons are both statically and aerodynamically balanced, making them relatively light to control. Inboard of the lower engines, the lower wings slope upwards to pass above the fuselage rather than through it, thus keeping the spars from obstructing potential cabin space. Both the elevators and ailerons are controlled via a large diameter Y-tube; the core controls being duplicated. The tailplane was of a biplane configuration, being furnished with three separate fins. The H.P.42 was powered by an arrangement of four Bristol Jupiter XIFs, each capable of producing up to , while the H.P.45 variant instead used four Jupiter XFBM supercharged engines, which could generate