A concise and timeless review of essential turbine aircraft performance principles. In a light and easy-to-read format, the author presents numerous fallacies held and defended by highly experienced pilots during simulator training. Common methods for calculating performance are reviewed against aircraft certification, regulations, TERPS/Pans-Ops criteria, and aerodynamic concepts. Confusing and ambiguous Aircraft Flight Manual sections are highlighted using actual examples. Before heading to initial or recurrent training, every pilot should read or re-read this book.