EGPWS Flashcards
How far ahead of terrain/obstacle conflict is a caution alert typically given?
40 to 60 seconds ahead of the terrain / obstacle conflict
How far ahead of terrain/obstacle conflict is a WARNING alert typically given?
30 seconds prior to the terrain/obstacle conflict
What are the six modes of EGPWS
- Excessive Descent Rate.
- Excessive Closure To Terrain.
- Altitude Loss After Take-off.
- Unsafe Terrain Clearance.
- Excessive Deviation Below Glideslope.
- Advisory Call-outs.
Explain EGPWS Mode 1
Excessive descent rate.
When within 2450 FT on the RAD ALT, excessive rates of descent will cause a “SINKRATE SINKRATE” caution, and a “PULL UP!” warning.
Explain EGPWS Mode 2
Excessive terrain closure rate.
Rapidly rising terrain ahead of the aircraft causes an initial “TERRAIN TERRAIN” caution, then a “PULL UP!” warning
Explain EGPWS Mode 3
Altitude loss after takeoff.
Significant altitude loss after takeoff with the flaps and gear not in the takeoff configuration will cause a “DON’T SINK” caution when within 245 ft of the ground
Explain EGPWS Mode 4
Unsafe terrain clearance.
This mode provides alerts for situations when the terrain is not rising rapidly or the aircraft is not descending excessively. Depending on aircraft configuration and altitude, mode 4 will give warnings for “TOO LOW TERRAIN” then “TOO LOW GEAR”
Or
“TOO LOW TERRAIN” and “TOO LOW FLAP”
Also provides a “TOO LOW TERRAIN” alert after takeoff if closure with terrain is detected. Similar to Mode 3, except doesn’t require a descent after takeoff to trigger it.
Explain EGPWS Mode 5
Excessive deviation below glideslope.
<1000 Ft AGL and 1.3 dots below glideslope = soft “Glideslope” alert.
<300 ft AGL and 2 dots below Glideslope = hard “GLIDESLOPE” alert.
Explain EGPWS Mode 6
Advisory call-outs.
“BANK ANGLE BANK ANGLE”
“MINIMUMS”
Various RAD ALT callouts on landing.
