background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults By CAIMS By Tips

Select color for CAS message that you wish to troubleshoot

(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

REPORTED FAULT CONDITION CODES TABLE

REPORTED FAULT CONDITION CODES TABLE
OUTPUT VOLTAGE
(P1-57/59)		 INDICATED ALTITUDE FAULT REPORTED
ALT-4000 antenna monitoring function enabled (P1-21 ground) with ANT-52 antenna
+2.4 VDC
+4.4 VDC
+6.4 VDC
+8.4 VDC
+10.4 VDC
+10.7 VDC
+11.0 VDC
+11.3 VDC
+11.6 VDC
+11.9 VDC
+12.2 VDC
+12.5 VDC
+12.8 VDC
+13.1 VDC
+13.4 VDC		 100 feet
200 feet
300 feet
400 feet
500 feet
600 feet
700 feet
800 feet
900 feet
1000 feet
1100 feet
1200 feet
1300 feet
1400 feet
1500 feet		 Antenna Fault
Power Supply Fault
Antenna Fault + Power Supply Fault
Invalid Strap
Antenna Fault + Invalid Strap
Power Supply Fault + Invalid Strap
Antenna Fault + Power Supply Fault + Invalid Strap
Internal Fault
Antenna Fault + Internal Fault
Power Supply Fault + Internal Fault
Antenna Fault + Power Supply Fault + Internal Fault
Invalid Strap + Internal Fault
Antenna Fault + Invalid Strap + Internal Fault
Power Supply Fault + Invalid Strap + Internal Fault
Antenna Fault + Power Supply Fault + Invalid Strap + Internal Fault
ALT-4000 antenna monitoring function left disabled (P1-21 open)
+4.4 VDC
+8.4 VDC
+10.7 VDC
+11.3 VDC
+11.9 VDC
+12.5 VDC
+13.1 VDC		 200 feet
400 feet
600 feet
800 feet
1000 feet
1200 feet
1400 feet		 Power Supply Fault
Invalid Strap
Power Supply Fault + Invalid Strap
Internal Fault
Power Supply Fault + Internal Fault
Invalid Strap + Internal Fault
Power Supply Fault + Invalid Strap + Internal Fault
NOTE:
The output voltages and indicated altitude readings shown in bold represent the four basic monitored functions described below:
  • The Antenna Fault monitoring function only exists when the ANT MON ENABLE discrete pin (P1-21) is grounded and the system is equipped with ANT-52 antennas.
  • The Power Supply Fault monitoring function detects an out-of-tolerance voltage level from the power supply.
  • The Invalid Strap monitoring function detects an invalid strap configuration with the Aircraft Installation Delay (AID) strapping, the Modulation Frequency strapping, or the Analog Format strapping (if applicable).
  • The Internal Fault monitoring function detects an internal failure within the ALT-4000 unit.
Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.