TERRAIN AWARENESS WARNING SYSTEM (TAWS) (Cont)
MODE 2 — Excessive Terrain Closure Rate
Mode 2 provides alerts and warnings when the TAWS detects that the closure rate between the airplane and the terrain is
excessive. The airplane need not be in descent; rising terrain may be encountered in level flight or the terrain may be rising
at a rate greater than the airplane rate of climb. Mode 2 uses radio altitude and vertical speed inputs.
Mode 2 has two sub-modes, Mode 2A and Mode 2B.
MODE 2A
Mode 2A is activated when flaps are not in the landing position. Penetration of the alert area will annunciate a GND PROX
amber CAS on the PFD and generate an aural “TERRAIN, TERRAIN.” The aural is annunciated once and the visual alert
will remain until the condition is rectified. Penetration of the warning area will annunciate a
PULL UP
warning CAS alert
on the PFD and generate an aural “PULL UP” warning. The aural and visual warning are annunciated continuously until
the condition is rectified.
CF
O
1701
002_013
2500
2000
1500
1000
500
0
RAD
IO
AL
T
ITUD
E (
F
EET
)
2000
0
4000
6000
8000
TERRAIN CLOSURE RATE (FEET/MINUTE)
10000
"PULL UP!"
"TERRAIN
TERRAIN"
"PULL UP!"
SPEED
EXPANSION
"T
E
R
R
A
IN
,
T
E
R
R
A
IN
"
Challenger Global 300 - Navigation
Page 17