This 5th Edition of the Guidance Material and Best Practices for Fuel and Environmental Management (or commonly known as Fuel Book) is a major part of IATA's Fuel Efficiency Campaign and Emission Reduction efforts. Since its start in August 2005 through more than 100 airline assessments over USD 9 Billion in fuel cost savings and more than 40 million tonnes of CO2 emission reduction has been identified. This new edition provides additional key information to the reader to ensure a better understanding of the methodology developed by IATA as part of the Environmental Management Programme. This new edition also provides additional guidelines and best practices to set-up an efficient fuel conservation programme. This brand new edition is the foundation of the IATA Green Team activities and the conceptual source of the practical IATA Fuel Program Implementation Guidance Material (prod. # 9795-01).