Method for calculating maintenance time interval of civil aircraft system

A method for calculating the maintenance time interval of a civil aircraft system belongs to the technical field of aviation. The method selects economy (cost/hour) as an optimization object, wherein as for safety tasks, two methods are used to calculate the time intervals of corresponding maintenance tasks, safety and economy are emphasized particularly, and the economy arithmetic recommended scope, safety threshold and product model regular checking target value are taken into comprehensive consideration to determine the task time interval. The method is economy-centered, is limited by safety and takes reliability as input idea, so as to recommend a reasonable maintenance time interval. A working group comprehensively takes supplier recommended value, engineering recommended value, history maintenance data, similar system part data, industrial experience point, the recommended value of the method and the like into consideration to make a decision, so that an optimum maintenance time interval judgment is mad