Your procedures and systems for measuring the density for fuel uplifts and fuel in tanks must at least incorporate the following information: · how actual fuel density value for fuel uplifts or fuel remaining in the tank is determined. This includes information on whether on-board measurement equipment used to measure fuel uplift and fuel in tanks automatically makes the conversion from litres to kg so that determination of fuel density is not needed; · how to deal with unpredictable situations in which you cannot determine the actual density value (this relates to situations that you do not know of during submittal of your monitoring plan: e.g. if the fuel supplier inadvertently fails to provide you with the necessary data and the actual density cannot be determined in the other ways). The procedure should in that case also state under what conditions you can apply another method or even use the standard density factor if the actual density value cannot be determined in another way; · who is responsible for determining the actual density value (fuel supplier, pilot etc.); · which control activities are implemented to ensure that the fuel density data is accurate and to avoid that incomplete or incorrect data is input in the internal systems and data from the technical logs are lost; · the information system used for processing and transmitting actual density value; · whether and how data on fuel density are input manually in systems; · how and where fuel density data is recorded; · justifications were applicable for using standard values. As well as for owned aircraft, your procedures and systems must incorporate fuel density from leased aircraft.