维修方针 meaning in Chinese

maintenance policy

It is the base and frame for airlines to determine preparatory maintenance policy and maintenance document , and is one of the based document insuring aircraft airworthiness
它是航空公司控制其初始维修方针,制订维修方案的基础和框架,是保证飞机持续适航的基本文件之一。
The maintenance program must be prepared before operating for the new type aircraft . it is the base and frame for airlines to determine preparatory maintenance policy and maintenance document , and is one of the based document insuring aircraft airworthiness
每一种新型飞机投入使用前必须制订一份维修大纲,它是航空公司控制其初始维修方针,制订维修方案的基础和框架,是保证飞机持续适航的基本文件之一。