The book describes modern methods for determining the maximum speed, climb rate and range of experimental and production aircraft, their take-off and landing characteristics, characteristics of stability, controllability and maneuverability, characteristics of controllability in limit flight modes and during spin removal. The theoretical foundations of the flight test methodology and processing of the materials of the flight experiment using modern measurement methods using self-recording equipment, telemetry, radars and kinoteodolites are presented. The book is intended for engineers and pilots associated with flight testing and operation of modern aircraft, however, it will be useful to students of aviation institutes, as well as students and cadets of educational institutions of the Air Force.