Description: time spent on the preventive maintenance of the engine; Name: preventive maintenance period
Description: part of maintenance time when preventive maintenance is carried out on an item, including technical, logistic and internal administrative delay; Name: preventive maintenance time
Description: A suitable, minimum (usually rounded) value of a frequency which is used for the description, designation or identification of a part, device, operating resource, facility or set of equipment; Name: Min. nominal frequency