Flashing master WARN or CAUT lights and
tone (chime) alert the operators that another
red or amber CAS message has been displayed.
New red or amber CAS messages will flash
along with the master WARN or CAUT lights
until either master WARN/CAUT light is de-
pressed, then they revert to a steady state.
New white advisory messages will flash on the
EICAS display for 5 seconds, then annunci-
ate steady. Once the condition that caused the
message to initially display is no longer valid,
the message is extinguished. New messages are
displayed at the top of the stack for the color
code they represent.
COLLECTOR MESSAGES
When an engine stops running, as the engine
spins down, the CAS generates the following
messages:
• “L or R FUEL PRESS LOW” as the engine
loses fuel pressure.
• “L or R OIL PRESS LOW” as the engine
loses oil pressure.
• “L or R HYD PUMP LOW” as the engine
loses hydraulic pressure.
• “L or R GEN FAIL” as the engine gener-
ator drops off-line.
These multiple CAS messages can be dis-
tracting to the crew. Therefore, a collector
message is incorporated into the design which
replaces all of the above listed individual CAS
messages into a single white “L or R ENG
SHUTDOWN” advisory message when the
corresponding thrust lever is placed in cutoff.
There are two other conditions where two CAS
messages are replaced with a single CAS mes-
sage. In the event both (inboard and outboard)
braking systems fail, the two individual amber
CAS caution messages indicating failure are
replaced with a single red CAS warning mes-
sage stating “NORM BRK FAIL” This criti-
cal airplane warning is duplicated on the CWP.
Should either the left or right generator fail,
it is annunciated with the appropriate L or R
GEN FAIL amber CAS message. Should both
generators fail, the amber caution messages are
then replaced with a single “red” CAS mes-
sage “L R GEN FAIL” also tripping the “GEN
FAIL” warning light on the CWP.
The above “collector” logic only applies to the
CAS and does not affect illumination of the
CWP red warnings. The CWP red warnings
will still illuminate individually upon engine
shutdown, as each of the applicable system pa-
rameters is met.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
4-6
FOR TRAINING PURPOSES ONLY
FlightSafety
international
L FUEL PRESS LOW
L OIL PRESS LOW
L GEN FAIL
L HYD PUMP LOW
R ENG SHUTDOWN
END
Figure 4-3. CAS Message Display
on EICAS