This specification contains the flying qualities requirements for piloted airplanes and forms one of the bases for determination by the procuring activity of airplane acceptability, The specification serves as design requirements and as criteria for use in stability and control calculations, analysis of wind-tunnel test results, flying qualities simulation tests, and flight testing and evaluation, The requirements are intended to assure adequate flying qualities regardless of design implementation or flight control system mechanization. To the extent possible, this specification should be met by providing an inherently good basic airframe. Where that is not entirely feasible, or where inordinate penalties would result , a mechanism is provided herein to assure that the flight safety, flying qualities and reliability aspects of dependence on stability augmentation-and other forms of system. complication will be considered fully.