Calculation method for direct maintenance cost (DMC) of aircraft

The invention provides a calculation method for a direct maintenance cost (DMC) of an aircraft and belongs to the technical field of aviation. Based on aircraft design data or aircraft use data, the DMC at a mature period of the aircraft or the DMC in a certain time period can be calculated; the calculation method is the basis of DMC control of a development stage of the aircraft and DMC monitoring of an operation phase, and mainly comprises three aspects of judgment of a belonged object of a calculation object, application of the calculation method, statistics and summation, wherein the judgment of the belonged object of the calculation object gives a whole flow and an input condition of the DMC calculation; the application of the calculation method comprises DMC pre-estimation based on an aircraft design and calculation based on the aircraft use data and comprises the execution of an integration flow of approaching time and maintenance time, which needs to be abided by the DMC pre-estimation based on the aircraft design; the statistics and summation can be used for carrying out classification treatment on a calculation result and future data can be conveniently analyzed and used.