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Learjet 60 - Air Data Computers

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Learjet
60
Pilot's
Manual
AIR
DATA
COMPUTERS
Two
digital
air
data
computers
receive
pitot
and
static
pressures
from
the
primary
pitot-static
system
and
temperature
data
from
the
total
temperature
probe
for
computation
of
the
flight
environment
.
Opera-
tor
input
to
the
air
data
computers
is
accomplished
via the
Air
Data
Reference
Panel
(ARP)
.
The
computed
results
of
the
sensor
inputs
are
converted
to
electrical
signals
and
transmitted
to
the
associated
cock-
pit
displays
.
Additional
outputs
from
the
air
data
computers
are
transmitted
to
the
integrated
avionics
processor
system
(IAPS)
for dis-
tribution to
other
systems
that
require
air
data
for
proper
operation
.
The
following
table
summarizes
the
various
outputs
under normal
conditions
.
The
air
data
computers
operate
on
28
VDC
through
the
ADC-ARP
circuit
breakers
on
the
pilot's
and
copilot's
circuit
breaker
panels
.
ADC
1
is
operative
during
EMER
BUS
operations
.
Refer
to
"Collins
Pro
Line
4
Avionics
System
For
The
Learjet
60"
(P/N
523-0777003)
and
the
Learjet
60
FAA
Approved
Airplane
Flight
Man-
ual
(FM-123)
for
additional
operational
information
and a
complete
description
of
the
air
data
system
interfaces
and
instruments
.
PM-123
Change
2
5-
2
7
ADC1
ADC2
"
Pilot's
Instruments
"
Copilot's
Instruments
Airspeed
/Mach
Airspeed
/Mach
Altitude/Vertical
Speed
Altitude/Vertical
Speed
"
Altitude
Alert
"
Altitude
Alert
"
L
Stall
Warning
"
R
Stall
Warning
"
Gear
Warning
"
Gear
Warning
"
Overspeed
profile
"
Overspeed
profile
"
AHS
1
(TAS)
"
AHS
2
(TAS)
"
Pilot's
EFIS
"
Copilot's
EFIS
"
L
FCS
"
R
FCS
"
Mach
Trim
"
ATC
2
(encoded
altitude)
"
ATC
1
(encoded
altitude)
"
FMS
2
"
FMS
1 "
Pressurization
Controller
"
Pressurization
Controller
"
FADEC
"
FADEC
"
SAT
"
SAT
"
TAS
"
TAS

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