Tangrams activities lie in the field of publication of operation-andmaintenance documents dedicated to aviation and development of their related software: translation of aviation documentation into European languages and making the required number of copies thereof in a short time automated computer-aided composition of the manuals in compliance with the standards adopted in Russia and abroad production of multimedia/interactive electronic technical manuals (IETMs) drawing up of a program intended for preparation, making up and keeping a record of revisions of the interactive electronic Illustrated Parts Catalogue for the flying vehicle drawing up of a program intended for preparation, making up and keeping a record of revisions of the interactive electronic Wiring Diagram Manual for the flying vehicle drawing up of a program intended for evaluation of the technical condition of the flying vehicle and forecasting thereof. The program makes it possible to control the performance of the sche