Q400 Caution Lights Flashcards
PITCH TRIM
Either FCECU channel detects a loss of ability to command or control its associated Pitch Trim Actuator
or
Airspeed #1 is not equal to Airspeed #2 ±17 kts (IAS MISMATCH message on PFD, RUD CNTRL, SPLR OUTBD and ELEV FEEL caution lights also illuminate)
or
Trim input commands disagree.
ELEVATOR FEEL
Either FCECU channel detects loss of ability to command or control its pitch feel actuator
or
Airspeed #1 not equal to Airspeed #2 ±17 kts (IAS MISMATCH message on PFD RUD CNTRL, SPLR OUTBD, PITCH TRIM caution lights also illuminate)
or
Normal acceleration is invalid
ELEVATOR ASYMMETRY
Right and Left elevators have a difference in angle of 4° for IAS > 185 KIAS and 6° for IAS < 185 KIAS.
ELEVATOR PRESS
1, 2 and 3 systems ALL supplying pressure to the elevator PCU’s simultaneously
3 HYD PUMP
3 (DC) Pump running for longer than 60 sec on the ground
or
System pressure below 900psi
EMER LTS DISARMED
Switched off
CABIN PRESS (Warning)
Cabin pressure exceeds 9800’
L or R AC BUS
A L or R variable frequency bus fault is sensed.
DC BUS
EPCU has reconfigured the main 28 VDC generation sytsem because of a source or bus fault condition.
L or R TRU
TRU is off because
Secondary feeder bus is not powered by its related TRU because of a source fault condition
or
AC generator switches are in OFF position.
INTERNAL DOORS
Internal Door Open or Access Request
CHECK FIRE DET (Warning)
Engine Fire
APU Fire
Loop failure
PITOT HEAT STBY
STBY switch set to OFF
or
Standby pitot/static heater malfunction
PITOT HEAT 1 or 2
Switch OFF
or
Pitot/static heater malfunction
WSHLD CTRL
Left or right anti-ice controller malfunction
WSHLD HOT
Left or Right windshield overheated
Automatically shut off
Side WDO HOT
Side windshield overheated
SMOKE (Warning)
Smoke detected in either the Forward or AFT Baggage hold
Vents close in rear compartment automatically
ICE DETECT FAIL
Both ice detector probes have failed
ENG ADAPT HEAT 1 or 2
Malfunction of both #1 or #2 intake heating elements
PROP DEICE
Timer Monitor Control Unit (TMCU) failed
or
Sensed a malfunction in prop deice system
DEICE TIMER
Timer and Monitor Unit (TMU) malfunction
DEICE PRESS
Airframe deice system pressure is too low
and
or
Distributer valve malfunction
TOUCHED RUNWAY (Warning)
Rear fuse has touched runway
FLT or CABIN DUCT HOT
Duct is Hot - Pack is Shut off - Must be reset
FLT COMPT or CABIN PACK HOT
Pack is Hot - Pack is Shut off - Must be reset