A330/A340 机组训练手册 FCTM Flight Crew Training Manual 2(75)

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‐ To ensure autothrust speed mode
‐ To avoid possible confusion between FD bar orders and, TCAS aural and VSI orders
? The PNF disconnects both FDs, but will not try to see intruders.
? The PF will avoid excessive maneuvers, and keep the Vertical Speed outside the red area of the VSI and within the green area. If necessary, the PF must use the full speed range between Valpha max and Vmax.
? The PNF must notify ATC.
? The flight crew should never maneuver in the opposite direction of the RA, because TCAS maneuvers are coordinated.
? In final approach, i.e. "CLIMB", "CLIMB NOW", "INCREASE CLIMB", the flight crew will initiate a go-around.
When clear of conflict:
? The flight crew must resume normal navigation, in accordance with ATC clearance, and using the AP, as required.
 
SUPPLEMENTARY INFORMATION
TCAS
 

 
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SUPPLEMENTARY INFORMATION
USE OF RADAR
 
GENERAL
Applicable to: ALL
The weather radar has two main functions:
? Weather detection
? Mapping.
Weather detection is the primary function. For weather detection, the radar detects precipitation droplets. The strength of the echo is in proportion to the droplet size, composition and quantity (e.g. the reflection of water particles is five times greater than ice particles of the same size). Therefore, the weather radar does not detect weather that has small droplets (e.g. clouds or fog), or that does not have droplets (e.g. clear air turbulence).
Mapping is the secondary function. For mapping, the echo takes into account the difference between incoming and outgoing signals. Any significant difference in the signal is easily mapped (e.g. mountains or cities), but a small difference in the signal is not mapped (e.g. calm sea or even ground).
FUNCTIONS
Applicable to: ALL
The flight crew can use the following to operate the radar: TILT
"Tilt" is the angle between the antenna radar and the horizon, irrespective of the aircraft's pitch and bank angles. The antenna stabilizes by using IRS data.
 
To help avoid weather, it is important to effectively manage the tilt, taking into account the flight phase and the ND range, Usually, it is the appropriate tilt value that provides ground returns on the top of the ND.
In case of overscanning, a cell may not be detected or may be underestimated, when the radar beam scans the upper part of the cell. This occurs because, at high altitude, this cell may have ice particles, and therefore the reflection of these particles is weak.
If AUTO TILT function is installed, selecting AUTO ensures a proper tilt management along the flight.
GAIN
Gain control is mostly used in AUTO/CAL mode. The detection or evaluation of cells will always start in AUTO/CAL gain mode.
　
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