系统3的液压液冷却跟系统1和2 的区别在哪？How is cooling of system 3 hydraulic fluid different from system 1 and 2?

（案例分析）2017年9月3日，某机组驾驶飞机执行扎兰屯-海拉尔航班，在海拉尔最后进近阶段副驾驶接到管制指令的同时，机长下达指令“打铃，放轮，襟翼30”，副驾驶接到机长指令“打铃，放轮，襟翼30”后，由于疏忽，在场高1748ft选择45°襟翼，但未放下起落架手柄，机组发现起落架未放下后复飞。二次进近正常落地。请问机组可能存在哪些问题？(Case Analysis) On September 3, 2017, a certain crew flew the aircraft to carry out the Zhalantun-Hailar flight. At the same time as the copilot received the control instruction during the final approach phase of Hailar, the captain gave the instruction "Ring, gear down, and flaps 30”, after receiving the command from the captain “Ring, gear down, and flaps 30”, the copilot, due to negligence, selected the flaps 45° at 1748ft AGL, but the landing gear lever was not selected down. The flight crew found the abnormal situation of landing gear and excuted a missed approach. The second approach was made and ended with a normal landing. What possible problems may exist shown by the flight crew?

（案例分析）某日冻雨天气，机组开好车后设置襟翼8滑出到起飞位。是否正确？应该怎么操作？(Case analysis) On a day of freezing rain, the crew sets flaps 8 after engine start, then taxi to the takeoff position . Is that correct?What should they do?

（案例分析）某航班在上客快结束时EFB收到舱单后一直无法签收，机长认为是机场信号接收问题，移动位置可能好一点,为保障航班正常，申请正常推出后尝试签收。飞机滑出上跑道后机长电话告知AOC电子舱单无法签收，航班滑回，你认为机长的决策是否正确？(Case analysis) A flight crew received loadsheet on EFB when the passenger boarding were to be completed soon, but it could not be signed, the captain thought the problem resulted from signal receiving, it could be improved by moving the aircraft to another place. For guaranteeing flight nomality, the flight crew requested a normal push-back and then had another try on signing. After the aircraft taxied out and entered runway, the captain informed the AOC by phone that the electronic loadsheed could not be signed, and the plane would taxi back. Do you think the captain＇s decision was correct and why?

发动机单发时必须执行单发飘降程序。In case of single engine, the single engine drift down procedure must be carried out.

双发失效后，在使用风转启动过程中，ENG FLAMEOUT发动机熄火警戒信息可能会瞬时出现。After dual engine failure, during windmilling relight, ENG FLAMEOUTcaution message would occur instantaneously.

在地面 APU 火警可以自动灭火，只需监控火警是否解除。APU fire can be extinguished automatically on the ground , and pilots only need to monitor whether APU fire is cancelled or not.

大坡度转弯机动飞行的目的，就在于使飞行员熟悉飞机操纵特性并提高仪表面板扫视能力。The aim of steep turn is to make pilot be familiar with
airplane control characters and improve their ability of scanning instruments and panels.

禁止根据TCAS TA 信息进行避让机动飞行。It is forbidden to execute avoidance maneuver according to TCAS TA information;

当出现TA 告警信息时，打开飞机所有外部灯光，将距离环范围调大，密切监控发展趋势，尽快减小上升或下降速率，监控飞行员注意向外观察，询问ATC。When the TA alert comes out, turn on all external lights, increase the scale of the range, monitor the evolution tendency carefully, and reduce the rate of climb or descent as soon as possible. PM monitors the outside and asks ATC for traffic situation.

对于所有飞机，当机翼（特别是前缘）受污染时，失速AOA 显著减小。On all aircrafts, the stall AOA is reduced significantly when the wing, particularly the leading edge, is contaminated.