This book contains a summary of 31 accidents reports published by USAF AIB. Each report contains a chapter dedicated to describe the human factors that have contributed to the accident. The accidents are related to airplanes which operate in the USAF, as the F-16, A-10, C-17, C-130, B-747, F-35, V-22 ... In the book introduction, it appears a statistical study regarding the most repeated human factors causes in these 31 accidents . The author thanks the divulging task of the USAF making these reports available for public so that the aviation community can learn from them.