Predictive Windshear Alerts  (Contd.)
Aural Alert
 Visual Alert
 Description
MONITOR
RADAR
DISPLAY
 RED windshear symbol on
navigation display.  Amber
WINDSHEAR message on
navigation display (all modes).
 Windshear within 3 miles and
ahead of the airplane detected
by the weather radar.
Enabled during takeoff and
approach, below 1,200 feet RA.
Predictive windshear symbol on
the navigation display shows
windshear position.
(expanded MAP, center MAP,
and expanded VOR or APP
modes only).
The weather radar automatically begins scanning for windshear when:

  • Thrust levers are set for takeoff, or
  • in flight below 2,300 feet RA (predictive windshear alerts are issued below 1,200 feet
    RA).

Option - Without Collins weather radar 622-5132-632 or 622-5132-633
Alerts are available approximately 12 seconds after the weather radar begins
scanning for windshear. Predictive windshear alerts can be enabled prior to takeoff by
pushing the EFIS control panel WXR switch.

Option - With Collins weather radar 622-5132-632 or 622-5132-633
Alerts are available approximately 12 seconds after the weather radar begins scanning for
windshear. Predictive windshear alerts can be enabled prior to takeoff by pushing the EFIS
control panel WXR switch. When PWS is enabled, radar antenna scan sweep is reduced.
If windshear is not detected, weather radar returns show only after pushing the EFIS control
panel WXR switch.