Method for optimizing product planned maintenance interval by civil airplane manufacturer

Abstract

The invention relates to the technical field of aviation, in particular to a method for optimizing a product planned maintenance interval by a civil airplane manufacturer. The method comprises the steps that an operator is selected, a number of samples are extracted, selected data are verified and classified, a main fault data table is established with relevant and important data, linear regression is conducted through the least square method with the number of flight hours serving as the abscissa and the number of faults serving as the ordinate, the relationship between time adjustment of the maintenance interval and the relevant and important data is established, and the growth rate of the number of relevant and important faults is calculated; hypothesis testing is conducted, whether the ratio of the number of the faults existing after the maintenance interval is adjusted belongs to a rejection region is judged, and whether the requirement for the confidence coefficient is met or not is judged; when the ratio of the number of the faults existing after the maintenance interval is adjusted belongs to the rejection region and the requirement for the confidence coefficient regulated by the industry is met, an existing maintenance time interval is prolonged to a new maintenance interval. According to the method for optimizing the product planned maintenance interval by the civil airplane manufacturer, on the premise that safety and reliability are guaranteed, on the basis of analysis of service data, planned maintenance tasks are optimized, a maintenance program is more effective and more economical, and the maintenance cost of the aviation operators is continuously reduced.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to a method for civil airliner manufacturers to optimize the planned maintenance interval of their products. Background technique [0002] Aviation manufacturers must submit MRBR (Maintenance Review Board Report-Maintenance Review Committee Report) to the airworthiness authority before the product is put into service, that is, the initial maintenance program, and obtain the approval of the aviation authority to support the aviation operator in formulating the corresponding maintenance plan. Provide continuous airworthiness service for products. [0003] The establishment of the maintenance program must meet the requirements of safety and economy, and can improve the operational reliability of the aircraft. Due to the lack of a large number of test or service data support, the determination of the initial maintenance program is often conservative. As the fleet enters service, the ...

AI Technical Summary

Problems solved by technology

In academia, the maintenance engineering department of a well-known foreign aviation manufacturer cooperated with a certain university to develop a "civil airliner maintenance interval optimization method based on service data". The method is not comprehensive enough, and the engineering practicability is not strong

At present, there is no feasible method or process for the optimization of civil aircraft maintenance tasks in China

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