All of the cracked lugs had two flanged bushings installed in the lug hole per Service Bulletin 2243 or in production to eliminate an earlier problem of migration of straight sleeve bushings into the mating clevises of the stabilizer.

A. For "emergency", the related failure should be responded immediately, for example, the total engine failure, fire or smoke, sudden cabin pressure lost.

B. An "Emergency" almost including a serious failure that requires later response, such as a total engines failure, flame out or smoke, or rapid cabin pressurization.

C. For "emergency", the related failure should be treated immediately, for example, the total engine is not malfunctioning, fire or smoke, sudden cabin pressure lost.

A. Because pressurized air can blow contamination away from the display unit, you should not use it to clean the holes behind the display unit in order to avoid damaging the equipment.

B. Do not use compressed air to clean the holes on the rear of the display unit. Compressed air will push contamination into the display unit. This can cause damage to the equipment.

C. Do not use compressed air to clean the holes behind the display unit, because it can blow contaminants into display unit which may be damaged.

A. 用真空清洁器和刷子清洁设备的内部及其底座。

B. 用真空清洁器和刷子清洁设备的外表面以及安装架。

C. 真空清洁设备及硬件设施的表面涂层。

A. If the hydraulic pump turns to generate pressure of 3000 psi, use the electric pump.

B. If the hydraulic pump fails to generate pressure of 3000 psi, use the electric pump.

C. If the hydraulic pump turns to supply pressure of 3000 psi, use the electric pump.

A. Prior to and aft use the tool / equipment, the user shall make a visual check or operational test to confirm the utility.

B. Before or after using the tool / equipment, the user shall make a visual check or functional test to confirm the serviceability.

C. Before or aft of using the tool / equipment, the user shall make a spot check or functional test to inform the usability.

A. 组装总管。

B. 安装连杆。

C. 安装总管。

A. Consult Table 7001 for information unrelated to the fabrication of the pivot assembly.

B. To obtain information about the manufacturing of the pivot assembly, refer to Table 7001.

C. Table 7001 contains details about all component except for the pivot assembly.

A. The operation of new generation aircraft has adopted the operation method of damage tolerance.

B. The damage tolerance design method is applicable to the new type aircraft.

C. The design concept of damage tolerance was successfully applied to the design of new generation aircraft.

A. 不要拧紧螺母去压紧它。

B. 不要旋转螺母去校准它。

C. 不要拧松螺母去对准它。

A. 控制主燃料控制哪个仪表为发动机和推力调节器提供燃料。包括电线、滑轮、连杆等物品，也是燃料控制单元的部件。

B. 控制主燃料控制所有仪表为发动机和推力调节器提供燃料。包括杠杆、电缆、滑轮、连杆等物品，也是燃料控制单元的部件。

C. 主燃油控制系统能够计量送往发动机和加力燃烧室的燃油，其包括油门杆、钢索、滑轮、连杆等，这些也属于燃油控制组件。