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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links
emer pwr only
ac bus 1 fail
ac bus 2 fail
ac bus 3 fail
ac bus 4 fail
ac ess bus fail
apu batt fail
apu gen overheat
apu gen ovld
av batt fail
batt bus fail
batt master off
cb trip ac feed
cb trip dc feed
dc bus 1 fail
dc bus 2 fail
dc emer bus fail
dc ess bus fail
elec sys fail
gen 1 ovld
gen 2 ovld
gen 3 ovld
gen 4 ovld
rat gen fail
apu batt chgr fail
apu gen fail
av batt chgr fail
batt emer pwr on
cb trip
elec sys fault
ess tru 1 fail
ess tru 2 fail
ext ac pwr avail
ext dc pwr avail
gen 1 fail
gen 2 fail
gen 3 fail
gen 4 fail
rat gen on
tru 1 fail
tru 2 fail
ac bus 1 man off
ac bus 2 man off
ac bus 3 man off
ac bus 4 man off
apu gen off
batt bus man off
dc bus 1 man off
dc bus 2 man off
dc ess bus man off
ext ac pwr on
ext dc pwr on
gen 1 off
gen 2 off
gen 3 off
gen 4 off
rat gen off
emer pwr only arrow btn

Either the batteries are powering the DC ESS Bus and BATT Bus or the RAT Line Connector (LC) is in the RAT position.

ac bus 1 fail arrow btn

AC bus 1 is not powered or has a fault.

ac bus 2 fail arrow btn

AC bus 2 is not powered or has a fault.

ac bus 3 fail arrow btn

AC bus 3 is not powered or has a fault.

ac bus 4 fail arrow btn

AC bus 4 is not powered or has a fault.

ac ess bus fail arrow btn

AC essential bus is not powered due to a fault.

apu batt fail arrow btn

The APU battery voltage is out of range (V less than 22 VDC or V greater than 35 VDC) for at least 4 seconds.

apu gen overheat arrow btn

APU generator is overheating (to excessive temperatures). Message generated in-air only since the APU will not automatically shutdown in flight.

apu gen ovld arrow btn

There is an overload on the APU generator.

av batt fail arrow btn

Avionics battery has failed.

batt bus fail arrow btn

Battery bus is not powered or has a fault.

batt master off arrow btn

Essential DC battery bus is off.

cb trip ac feed arrow btn

A circuit breaker for an AC feeder/AC cabin feeder has tripped.

cb trip dc feed arrow btn

A circuit breaker for a DC feeder/DC cabin feeder has tripped.

dc bus 1 fail arrow btn

DC bus 1 is not powered due to a fault or a shed.

dc bus 2 fail arrow btn

DC bus 2 is not powered due to a fault or a shed.

dc emer bus fail arrow btn

DC emergency bus has failed.

dc ess bus fail arrow btn

DC essential bus is not powered or has a fault.

elec sys fail arrow btn

A major fault detected in the electrical system ground only.

gen 1 ovld arrow btn

There is an overload on Generator 1.

gen 2 ovld arrow btn

There is an overload on Generator 2.

gen 3 ovld arrow btn

There is an overload on Generator 3.

gen 4 ovld arrow btn

There is an overload on Generator 4.

rat gen fail arrow btn

A failure was detected with the RAT generator or its interfacing systems

apu batt chgr fail arrow btn

APU battery charger has detected a fault and shutdown.

apu gen fail arrow btn

APU generator has failed.

av batt chgr fail arrow btn

Avionics battery charger has detected a fault and shut-down.

batt emer pwr on arrow btn

The batteries are the only source of electrical power.

cb trip arrow btn

A circuit breaker has tripped.

elec sys fault arrow btn

Loss of redundancy on EPGDS logic.

ess tru 1 fail arrow btn

Essential TRU 1 has failed.

ess tru 2 fail arrow btn

Essential TRU 2 has failed.

ext ac pwr avail arrow btn

AC external power is available.

ext dc pwr avail arrow btn

DC external power is available.

gen 1 fail arrow btn

Generator 1 has failed.

gen 2 fail arrow btn

Generator 2 has failed.

gen 3 fail arrow btn

Generator 3 has failed.

gen 4 fail arrow btn

Generator 4 has failed.

rat gen on arrow btn

The RAT is deployed and the RAT LC is on.

tru 1 fail arrow btn

TRU 1 has failed.

tru 2 fail arrow btn

TRU 2 has failed.

ac bus 1 man off arrow btn

AC bus 1 selected off.

ac bus 2 man off arrow btn

AC bus 2 selected off.

ac bus 3 man off arrow btn

AC bus 3 selected off.

ac bus 4 man off arrow btn

AC bus 4 selected off.

apu gen off arrow btn

APU generator is OFF.

batt bus man off arrow btn

Battery bus selected off.

dc bus 1 man off arrow btn

DC bus 1 selected off.

dc bus 2 man off arrow btn

DC bus 2 selected off.

dc ess bus man off arrow btn

DC essential bus selected off.

ext ac pwr on arrow btn

External AC supply powering airplane.

ext dc pwr on arrow btn

External DC supply powering airplane.

gen 1 off arrow btn

Generator 1 is off.

gen 2 off arrow btn

Generator 2 is off.

gen 3 off arrow btn

Generator 3 is off.

gen 4 off arrow btn

Generator 4 is off.

rat gen off arrow btn

RAT Generator selected off.

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.