制造商在交付飞机时提供的建议性检查程序有助于保证其适航性。由于飞机执行的任务、给予的维护以及使用年限和使用率存在差异，ABC公司已根据检查、测试和分析确定，认为有必要提供额外的检查要求，以进一步确保飞机能够继续在初始审定的设计载荷下运行。

In these conditions, the mechanical and electrical pitch trim systems will not operate.

The airplanes were delivered with recommended inspection programs to keep them airworthy.

The topic sentence is the first and most important sentence in a paragraph.

You must use ear protection when you are near an engine that is in operation.

Make sure that the bogie rollers are aligned with the notches in the track.

To prevent damage to the engine, immediately install protective covers on all openings.

A mixture of water and methanol increases the power of the engine.

Make sure that the label fully attaches to the surface and that there are no bubbles.

Apply two layers of protective compound to prevent hydraulic fluid damage to the sealant.

It is the responsibility of the airplane owner and the pilot to insure that the airplane is loaded properly.