Warning Systems Flashcards
What does dotted green terrain on the ND indicate? Amber? Red? Magenta?
Red - Terrain > 2,000’ above
Amber - Terrain 2000’ above to 500 below (250 w/ gear)
Green - Terrain 500 below (250 w/ gear) to 2,000’ below (or peaks mode)
Magenta - no terrain data available
Is the doppler turbulence detection capable of detecting clear air turbulence?
No, precipitation is required
What triggers an aural “CAUTION TERRAIN” and amber TERRAIN?
Terrain is 40 to 60 seconds from projected impact
What triggers an aural “TERRAIN TERRAIN PULL UP” and red TERRAIN?
Terrain is 20 to 30 seconds from projected impact
For takeoff, when does the PWS activate if the WXR switch is not ON?
Thrust lever advancement for takeoff
PWS available after 12 seconds
Does the weather radar provide alerting for all types of windshear?
No. Moisture or particulate matter is required for predictive windshear
Predictive Windshear extends how far?
Out to 3nm +/- 25 degrees
When is PWS alerting available on the ground?
12 seconds after being turned on by
WXR to ON, or
Thrust lever advancement for takeoff
When will the TCAS system issue “CLEAR of CONFLICT” or “MONITOR VERTICAL SPEED”
Clear of conflict - clear of RA
Monitor vertical speed - currently outside RA command area, stay there! Stay out of red box
What tiggers a “WINDSHEAR AHEAD” aural alert?
Windshear close to and directly ahead of aircraft
Enabled below 1,200’ RA
How do TCAS TA and RA symbols appear?
TA - amber circle
RA - red box
When are TCAS RAs inhibited?
Below 1,000’ RA then TA ONLY
How does the RAAS operate?
Automatically to provide:
-Approaching/on runway advisories
-Runway remaining
-Insufficient runway, go around
-Takeoff flaps advisory (outside 1-25)
When could you receive an aural and visual WINDSHEAR (red) alert on approach? takeoff?
Below 1,500’ RA and excessive windshear detected by GPWS
Disables on approach at 10’ RA
What indicates the TCAS is not computing RAs but only TAs?
TA ONLY on ND
