493. 确保材料的保质期未过期。

2870. Also includes components that are an integral part of, or fitted to the power plant cowling

2869. 解释如何检查它们是否正常运行,以及如何识别故障

2868. If there is a malfunction, the gears will automatically disengage

2867. All information required by FAR Part 23, or other applicable regulations, will be included

2866. 带有磁性的工具对罗盘系统有不利影响。

2865. Hello !May I speak to the Boeing representive Mr David?—Hold on , please He will pick up your phone at once

2864. 冲洗管道以清除污染。

2863. 对机身的下部做外部检查

2862. 旋转门把手直到下面的门被抬起。

2861. Maintenance technicians need to possess a detailed knowledge of safety procedures used in aircraft servicing, taxiing, run-up, and in the use of ground support equipment