BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 482

The warning/caution messages consist of the
following:
• Disengage messages
• Primary caution messages
• Advisory caution messages
• Sensor failure messages
• Invalid operation messages
In most cases, the warning/caution messages
cause the illumination of the RESET push-
button. This configuration indicates that an ac-
knowledgement is necessary by pushing the
RESET pushbutton, disconnecting the au-
topilot, or system reconfiguration. This ac-
k n ow l e d g e m e n t c l e a r s t h e m e s s a g e a n d
extinguishes the RESET light. If another fault
has been detected, this procedure is repeated
following the reset action.
Some messages require a corrective action.
In this case, the RESET pushbutton light is off,
and the message remains until the problem is
corrected. Other messages time-out and clear
after five seconds. The RESET light does not
illuminate for timed-out messages.
If AFCS message data received by the advisory
display is invalid (ASCB failure), a dashed
amber line is displayed. This line is cleared only
when valid AFCS message data reappears.
If at that time, the advisory display receives
a disengage message, the dashed amber line
is overwritten by the flashing disengage mes-
sage. Once the disengage message has been
cleared by the RESET Pushbutton, the dashed
amber line reappears.
Test Functions
The built-in test capability of the AFCS con-
sists of the following:
• Power-up test
• Ground maintenance test
16-70 CL 601-3A/R
CL-600-2B16 PILOT TRAINING MANUAL
Power-Up Test
The power-up test automatically initiates dur-
ing power application to the computer. This test
verifies the computer internal and external
hardware interfaces, memory, and monitors,
and is automatic; it requires no pilot action.
If no failures are detected, the power-up test
terminates with no messages displayed. If a
failure condition is detected, it is annunci-
ated as "AFCS OFF" on the advisory display.
Ground Maintenance Test
The ground test combines the automatic power-
up/restart test with an operator interactive test
to provide broader diagnostic capability than
can be provided by the power-up/restart test.
Flight Fault Monitoring and Real-
time Bite
The function consists of a continuous test rou-
tine that operates when the computer operates.
The tesh checks the power supply, hardware
monitors, servo feedbacks, analog/digital-
d i g i t a l / a n a l o g c ove r s i o n s , a n d s o f t wa r e
monitors.
Flight Fault Summary
The DAFCS has built-in diagnostics that aid
in determining the cause of in-flight AFCS fail-
ures. The FLIGHT FAULT SUMMARY mode
may be entered via the ground maintenance
switch (DAFCS MAIN TEST ON–OFF) lo-
cated on the copilot's cockpit bulkhead. The
ground maintenance test mode can only be
entered with the aircraft on the ground. If an
AFCS failure occurs in flight, the ground
maintenance test mode should be entered after
landing to retrieve the FLIGHT FAULT SUM-
MARY data. The advisory display appears as
shown in Figure 16-71(A) after entering
ground maintenance test. The pilot should
step through the tests using the L AFCS button
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
• Flight fault monitoring and real-time
bite
• Flight fault summary
L t é e
L t d .