As part of a major update for the Indian Air Force Mirage 2000’s, Stirling was approached to provide the certification clearance analysis that would allow the aircraft to carry non-approved OEM stores on the outboard pylons. The major issue facing us was that certification had to be tackled in the complete absence of OEM aircraft design data, so it was necessary to reconstruct the data required using reverse engineering methods. This included the verification and validation of such data and the models created to support the upgrade. Stirling engineers travelled to India to present the certification plan the regulatory body, CEMILAC and progressed to capture data from the physical measurement of the aircraft and its existing stores and proposed new stores. In addition, Stirling engineers planned and supported wind tunnel tests, ground vibration tests, structural stiffness tests and flight tests of the unmodified aircraft to generate the required data.