The economic situation of the recent years forces to operate aircraft at highest payloads possible and to load it at its maximum allowable take-off masses. Therefore, take-off performance optimization is nowadays as important as never before. This book offers a summary of factors affecting the maximum take-off mass and appropriate take-off speeds, which together represent necessary performance data for a safe take-off. These are usually presented in so called runway analyses. That is the reason why this book might be of interest for fight operations engineering personnel or pilots as it answers possible questions about the application and computing of the runway analyses.