The empty weight of an aircraft includes all operating equipment, That has a fixed location and is installed in the aircraft. It includes the weight of the airframe, Powerplant required equipment, optional or special equipment, Fixed ballast, hydraulic fluid, and residual fuel and oil. Residual fuel and oil are the fluids that will not normally drain out, Because they are trapped in the fuel lines, oil lines, and tanks. They must be included in the aircraft’s empty weight. For most aircraft certified after 1978, The full capacity of the engine oil system is also included in the empty weight. Information regarding residual fluids in aircraft systems that must be included in the empty weight, And whether full oil is included, … Continue reading Aircraft Weight and Balance Terminology – Empty Weight