MPX5131943: The Short-Mayo composite aircraft comprised the Short S.21 Maia, (G-ADHK) which was a variant of the Short "C-Class" Empire flying-boat fitted with a trestle or pylon on the top of the fuselage to support the Short S.20 Mercury(G-ADHJ) seen here in the Medway, 12/10/1937 (b/w photo) / Bridgeman Images