NAVIGATION
Volume 2
Flight Crew Operating Manual
Sep 13/2004
17-01-16
CSP 100-6
REV 1
TERRAIN AWARENESS WARNING SYSTEM (TAWS) (Cont)
MODE 1— Excessive Descent Rate
Mode 1 alerts when the aircraft descends close to the terrain. The mode is active when the airplane is less than 2500 ft.
AGL. Mode 1 requires radio altitude and rate-of-descent data.
The annunciation envelope consists of two areas, alert and warning.
- Penetration of the alert area annunciates a
GND PROX
amber CAS alert on the PFD and generates an aural
“SINKRATE, SINKRATE”. The aural alert will be annunciated once and will be repeated only if condition
degrades by more than 20% based on computed time to impact. The visual alert will remain until the condition is
rectified.
- Penetration of the warning area will annunciate a
PULL UP
red CAS alert on the PFD and generate an aural
“PULL UP” warning. The aural warning is annunciated continuously until the condition is rectified.
CF
O
1
701002_012
2500
2000
1500
1000
500
0
2000
0
4000
6000
8000
R
A
DI
O
A
L
T
ITU
DE
(
F
E
E
T
)
DESCENT RATE (FEET/MINUTE)
"SINKRATE"
"PULL UP!"
"PULL UP!"
"S
IN
K
R
A
TE
"
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