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Sound environment reproduction of various flight conditions in an aircraft mock-up is a valuable tool for the study, prediction, demonstration, and jury testing of interior aircraft sound quality. To provide a faithful reproduced sound environment, time, frequency, and spatial characteristics should be preserved as much as possible. Physical sound field reproduction approaches for spatial sound reproduction are mandatory to immerse the listener's body in the proper sound field so that localization cues are recreated. For sound field reproduction inside cabin mock-up, the reported approach relies on multichannel equalization using least-mean-square formulation. In this paper a modified multichannel equalization procedure is proposed to simplify the selection of the regularization amount. The paper presents physical evaluations of reproduced sound fields on the basis of real flight recordings using an 80-channel microphone array and 41 reproduction sources in the cabin mock-up. Physical evaluations of reproduced spatial sound distributions are also provided on the basis of acoustic source maps obtained from acoustic imaging. [ABSTRACT FROM AUTHOR]