
The ADS consists of two complete systems
with two digital air data computers (DADC 1
and DADC 2). The DADCs accept both digi-
tal and analog inputs, performs digital com-
putations, and supplies both digital and analog
outputs. The DADCs receive pitot-static pres-
sures from the pitot-static system and tem-
perature signals from the total air temperature
probe. The DADCs also receive inputs from
the altimeter, the ALT SEL control on the
copilot instrument remote controller, and the
IAS/Mach control on the pilot instrument re-
mote controller. The DADCs use the inputs to
compute signals related to altitude, vertical
speed, true airspeed, IAS, Mach number, and
maximum operating speed. DADC provides the
inputs to the associated air data indicators.
The ADS consists of the following:
• TAS/SAT/TAT indications
• Mach/airspeed indicator
• Altimeter
• Vertical speed indicator
NOTE
The DADC self-test mode is selected
by placing the DAFCS ground main-
tenance test switch to the ON posi-
tion and then pressing the LAFCS
button on the advisory display nine
times to select the 21 DADC test
menu. Then press the reset button to
begin the test.
16-30
CL 601-3A/R
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
L t é e
L t d .
CL-600-2B16 PILOT TRAINING MANUAL
ASCB
BA-141 DARO
ALTITUDE INDICATOR
SG-815
SYMBOL
GENERATOR
AZ-810
DIGTAL
AIR DATA
COMPUTER
INERTIAL
REFERENCE
S1-225A MACH
AIRSPEED INDICATOR
VS-200 VERTICAL
SPEED INDICATOR
100
120
140
160
180
200
230
IAS
KT
250
300
350
400
80
60
MACH
5 0
OFF
2
2
4
4
6
0
1
1
VERTICAL SPEED
1000 FT PER
MIN
DOWN
.5
.5
UP
0
5
6
10
3
7
2
8
8
20
7
2
9
1
4
100
FEET
ALT
IN HG
MB
30 1 0
BARO
Figure 16-27. Air Data System Data Flow