Abstract: The invention discloses a fuselage which is subdivided into a fuselage lower part (1) and a shell-shaped upper fuselage portion (3) where the upper fuselage portion (3) is provided with windows arranged in rows (12, 13), the windows being formed by inserted pieces (8) with the fuselage moulded around them, the windows being formed on an integral insert part (7). It is desirable that, on the one hand, the upper fuselage portion including the injection-moulded window pieces be of simpler construction and, on the other hand, should have a continuous external fuselage surface extending continuously without any conspicuous joint line down to the joint with the fuselage lower part.