ABSTRACT—Configuring and designing on-board flight test instrumentation for a modern fighter aircraft is a real challenge. Flight Test Instrumentation (FTI) System has to acquire data from large number of sensors on aircraft. It demands distributed acquisition and centralized processing based flight test instrumentation as the sensors and data acquisition units are spread across large area of the aircraft. Acquisition of data in real time from large numbers of sensors, formatting minor frames as per telemetry standards, and real time data telemetry is a critical task as load on process is very high. This paper brings out a technique for relieving great extent processor load from processor participating to exchange the minor frame data and on-board storage data between remote acquisition unit (RAU) and data center (DACENT) with the help of Intelligent Real Time Data Scan Module(IRDSM). This paper also brings out the detail design approach adopted for IRDSM and significant performance improvement gained. Common design methodology adopted for DACENT and RAU are also brought out here. Self test capabilities of the module, component count reduction for better reliability, design of registry structure, process of screening at the module level for better reliability, extensive testing of modules with different configurations, etc, are also discussed. Issues encountered during the development phase are brought in this paper.