ICON DISPLAY
WINDSHEAR ICON WITH SEARCHLIGHTS
The Windshear icon shown on the display represents the location of the event in both range and azimuth. In this example, the windshear begins 2 miles ahead and 30° to the right of the aircraft.
VISUAL PWS ALERT ANNUNCIATIONS
Visual Caution and Warning Alerts are annunciated on the Electronic Displays.
. Caution Visual Alert: Amber “WINDSHEAR”
. Warning Visual Alert: Red “WINDSHEAR”
AURAL PWS ALERT ANNUNCIATIONS
Caution and Warning Alerts are generated by the cockpit audio system.
Caution Aural Alerts may be one of the following (selected at installation):
. Option 1: “Whoop, Whoop”
. Option 2: “Monitor Radar Display”
Warning Aural Alerts are as follows:
. Take-Off: “Windshear Ahead, Windshear Ahead”
. Approach: “Go Around, Windshear Ahead”
PWS SYSTEM FAILURE ANNUNCIATION
System failures are annunciated on the Electronic Displays. Examples: NO PWS, PWS INOP, or W/S PRED
WEATHER ANALYSIS
MANUAL WEATHER MODE
Manual Weather Mode provides a means to assess storm cell height and development by providing selectable altitude slices. These slices from the 3D memory are corrected for the curvature of the earth, providing a view at a constant MSL altitude level.
Selecting MAN on the mode selection knob enters the Manual Mode. Upon initial selection, the altitude slice is set to the current aircraft altitude (nearest 1000 feet). The altitude (ALT) knob is used to select the desired altitude slice from 0 to 60,000 feet MSL in 1,000 foot intervals. Turbulence information and Secondary weather information is removed in MAN mode to enhance analysis of weather reflectivity.
FULL COVERAGE GROUND MAP MODE (MAP)
The RDR-4000 Weather Radar System can be used in Ground Map mode to identify terrain features. For ground mapping use the following procedure:
1. System Control: L/R (or NORM)
2. Mode: MAP
3. Range: As desired
4. Gain: If necessary, adjust for optimum observation of terrain features.
The purpose of the MAP mode is to aid in identifying prominent terrain features, such as coastlines, lakes, and large built-up urban areas. MAP mode provides an extended ground map picture by piecing together individual scans and combining them in the memory for display. Reflectivity data that is considered ground clutter (and removed from the weather views) is the basis for the Ground Map. Data from the terrain database is not used, providing an independent verification of position. The Ground Map is generated automatically and simultaneously with weather.
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