From this graph, Fujita then released the following descriptions for the F-Scale http://www.spc.noaa.gov/faq/tornado/f-scale.html. Over the years, the F-Scale has revealed the following weaknesses: 1  It is subjective based solely on the. 2  caused by a tornado.
9 Answers. The empty weight is the weight of the airplane including anything that is permanently attached to it and includes any un-drainable fluids. There is a maximum gross weight for takeoff and on larger aircraft there may be a maximum landing weight. The useful load is the difference between the maximum gross weight and the empty weight. To the empty weight, you have to add the fuel, oil, any other fluids, pilot and passengers, and baggage.
Data are presented that will provide the user with statistical information on aircraft usage, ground and flight loads. occurrences, and system operational usage based on actual B-777-200ER operational usage. The aircraft usage data include. statistics on aircraft weights, flight distances, altitudes, speeds, and flight attitudes. Flight loads data include statistical. information on gust and maneuver load factors, derived gust velocities, and ground-air-ground cycles.