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

59.请注意, 飞机的改装或修理工作必须由持照人员完成。

58. Aircraft maintenance manual or section, which includes at east the following D information introduction information that includes an explanation of the airplane＇s features and data to the extent necessary for maintenance or preventive maintenance.

57.对于拥有或操作非运营飞机的持照飞行员, 可以在联邦航空法规43 部的授权下对其飞机实施受限制的预防性维修。

56. It has a single shaft and operates at a constant speed.

55. This enables better thrust management and decreasesfuel consumption.

54.用大量肥皂水清洗窗户。

53. This document shall specify, for a crack inspection, the minimum size crack expected to be discovered or, if no minimum is defined, a statement to this effect.

52. Controls in the flight compartment permit selection of temperature and flow rates.

51.不要使用可能引起火花的测试设备。r

50. Make sure that the temperature of the probe increased to more than 500℃。