曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
In all events, check the AP engagement status, and re-engage it when appropriate. It may have tripped and the associated aural warning may have been superseded by the overspeed aural warning.
CONSIDERATIONS ON CLEAR AIR TURBULENCE (CAT)
Clear Air Turbulence (CAT) can be expected by referring to weather charts and pilot reports. However, the radar cannot detect CAT, because it is "dry turbulence".
If CAT is encountered, the flight crew may consider avoiding it vertically, keeping in mind that the buffet margin reduces as the altitude increases.
MISCELLANEOUS
? The flight crew must set the harness to on, check that the seat belts signs are on and use all white lights in thunderstorms.
? Turbulence speeds are indicated in the QRH.
SUPPLEMENTARY INFORMATION
ADVERSE WEATHER
? It is not necessary to set the ENG START selector to IGN. In the case of an engine flameout, the igniters will trigger automatically.
? The handling characteristics of "fly-by-wire" aircraft are independent of the CG in normal and alternate law. Therefore, it is not necessary to command a FWD fuel transfer, in the event of heavy turbulence in cruise.
WINDSHEAR
Applicable to: ALL
BACKGROUND INFORMATION WINDSHEAR PHENOMENON
Windshear is mainly due to a cool shaft of air, like a cylinder with a width between 0.5 nm and 1.5 nm, that is moving downward. When the air hits the ground, it:
? Mushrooms horizontally, causing horizontal wind gradient
? Curls inward at the edges, causing vertical air mass movement.
Flight safety is affected, because:
? The horizontal wind gradient significantly affects lift, causing the aircraft to descend, or to reach a very high AOA.
? The vertical air mass movement severely affects the aircraft flight path.
Windshear Phenomenon
AWARENESS AND AVOIDANCE
Awareness of the weather conditions that cause windshear will reduce the risk of an encounter. Studying meteorological reports and listening to tower reports will help the flight crew to assess the weather conditions that are to be expected during takeoff or landing.
If a windshear encounter is likely, the takeoff or landing should be delayed until the conditions improve, e.g. until a thunderstorm has moved away from the airport.
SUPPLEMENTARY INFORMATION
ADVERSE WEATHER
STRATEGY FOR COPING WITH WINDSHEAR
Windshear and microburst are hazardous phenomena for an aircraft at takeoff or landing. The strategy to cope with windshear is:
? Increasing Flight Crew Awareness through the Predictive Windshear System (PWS)
? Informing the Flight Crew of unexpected air mass variations through FPV and approach speed variations
? Warning the flight crew of significant loss of energy through "SPEED, SPEED, SPEED" and "WINDSHEAR" aural warnings
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
A330/A340 机组训练手册 FCTM Flight Crew Training Manual 2(59)
