Method and device for low-utilization maintenance interval conversion of aircraft

The invention provides a method and a device for converting maintenance intervals during low utilization rate of an airplane. The method comprises the following steps: S1, acquiring an airplane maintenance outline; s2, the number of months needing to be counted is determined, and airplane utilization rate statistics is carried out; S3, airplane low utilization rate prediction is carried out; S4, maintenance task interval conversion is carried out, wherein maintenance tasks of which maintenance interval units are not calendar days are screened out; the importance of the maintenance tasks is judged, and maintenance task interval conversion calculation is carried out; and S5, new maintenance tasks are summarized. The equipment comprises a database, an aircraft utilization rate statistics module, a low utilization rate prediction module, a maintenance task conversion module and a maintenance task output module, wherein the maintenance task conversion module comprises a screening module, a weight module and a conv