21、此程序解释如何识别迫在眉睫的问题以及如果发生故障该怎么处理。

1459、Utilizing an airplane as intended by the manufacturer,combined with sound inspection and maintenance practices, forms the basis for assuring the airplane remains airworthy and safe to operate.

1458、所有航程距离均应以海里表示。

1457、Install the spacer between the two washers.

1456、Open communication should exist with the operator telling the manufacturer as soon as some new kinds of situationrises and the manufacturer responding back with solid help to the operators.

1455、The system test, which is self-contained and may duplicate other tests, contains all adjustments and tolerances tomaintain systems or units at maximum efficiency.

1454、According to the specification, handbooks shall be readily revisable.

1453、Only when both manufacturer and operator do their job can remain an entire fleet of airplanes continuously airworthy.

1452、A modular engine construction is used on all modern aircraft.

1451、机载辅助动力装置是那些装于飞机上的机载动力装置,用于产生和供应单一类型或辅助电力、液压、气动或其他动力的组合。

1450、All Supplements may be issued to all owners of the airplane model covered by the Handbook.