A series of trials to numerically analyze NAL transonic wind-tunnel flows about a fully configured model of aircraft, ONERA-M5 (Office National d'Etudes et d'Recherches Aerospatiales), has been performed to investigate the reliability of numerical computations, and in this time the computational region within the wind tunnel has been enlarged. To realize computations of wind-tunnel flows about a complicated configuration, a multi-domain technique and a model of outflow through the perforated wall of the transonic wind-tunnel are used. As a result it is known that this trial is successful since the computed pressure, lift and drag coefficients agree well with experimental ones.