<div class="htmlview paragraph">This paper reviews various types of deficiencies uncovered during the service life of USAF aircraft. Specific malfunctions and failures are presented with illustrations to show that reliability and safety must be designed, manufactured, and tested into all parts of the airplane. This applies not only to mechanical linkages, hydraulic systems, and electrical circuits, but also to aircraft major components such as wings, control surfaces, and the landing gear. Details of specific failures and the corrective actions taken, exemplify the design principles and policies required to improve reliability and safety of AF aircraft.</div>