Annunciator Lights

Question 1

Basic ATT-1, Basic ATT-2 (N961CE Only)

Answer 1

Light illuminates on test but has no function.

Question 2

APU GEN OFF (MC)

Answer 2

Indicates APU is operating but APU generator is not in use.

Question 3

APU GEN FEEDER FAULT (MC)

Answer 3

APU generator differential protection fault for APU generator distribution system. AC X-tie locked open. (-83 only)

Question 4

L/R GEN FEEDER FAULT (MC)

Answer 4

L/R generator differential protection fault has occured (between genreator and generator relay). AC X-tie locked open. AC CROSSTIE LOCKOUT light should be illuminated. (-83 only)

Question 5

(L,R) AC BUS OFF (MC)

Answer 5

Respective generator bus not powered.

Question 6

(L,R) GEN OFF (MC)

Answer 6

Respective generator relay is open.

Question 7

(L,R) CSD OIL PRESS LOW (MC)

Answer 7

Respective oil pressure in CSD is below limits.

Question 8

EMER LIGHT NOT ARMED (No MC)

Answer 8

EMER LTS switch is in OFF or ON position.

Question 9

AC CROSSTIE LOCKOUT (No MC)

Answer 9

AC Crosstie relay is locked open and automatic crosstie is inop.

Question 10

BATTERY OFF (No MC)

Answer 10

Batt switch is in off position. (961CE only)

Question 11

DC TRANSFER BUS OFF (No MC)

Answer 11

DC Transfer bus is not powered.

Question 12

DC BUS OFF (MC)

Answer 12

Indicates either Left or Right DC bus is not powered.

Question 13

(L,R) ENG ANTI-ICE ON

Answer 13

Engine anti-ice system is on. NOTE: When any engine anti-ice valve is open, light will illuminate regardless of switch position.

Question 14

WING ANTI-ICE ON

Answer 14

Indicates switch position is on.

Question 15

FUEL LEVEL LOW (MC)

Answer 15

Indicates fuel quantity of approximately 2,500 lbs in either Main Tank. (-83 only)

Question 16

BATTERY CHARGER (MC)

Answer 16

Indicates battery charger has failed. (961CE only)

Question 17

(L,R) ICE PROTECT TEMP HIGH (MC)

Answer 17

Air delivered to pneumatic crossfeed duct is above normal operating temperature, indicating malfunction in temp control system.

Question 18

AIRFOIL ICE PROT PRESS ABNORMAL (MC)

Answer 18

Low or unbalanced pressure in Airfoil or Tail ice protection system. With switch in off position indicates malfuction of ice protection pressure regulator.

Question 19

(L,R) ICE PROTECT TEMP LOW (No MC)

Answer 19

Air delivered to system is below normal operating temp. Can be malfunction in temp control system, but is common at low power settings during descent.

Question 20

(L,R) ENG VALVE (No MC)

Answer 20

Disagreement between ANY engine anti-ice valve and switch position.

Question 21

TAIL DE-ICE ON

Answer 21

De-icing selected for leading edge of horizontal stabilizer.

Question 22

PITOT/STALL HEATER OFF (MC)

Answer 22

METER SEL & HEAT selector is in OFF position. With selector in any other position, indicates loss of electrical power to one or more pitot tube or stall/AOA vanes. At least one of six heaters is inoperative.

Question 23

ICE PROT SUPPLY PREE HI (MC)

Answer 23

Excessive duct pressure (above 22 psi) from malfunction of ice prot pressure regulating valve.

Question 24

(L,R) FUEL HEAT ON

Answer 24

Shutoff valve in engine bleed air supply line to air/fuel heat exchanger is open.

Question 25

ENG SYNC ON (MC)

Answer 25

ENG SYNC selector is in N1 or N2 position with gear handle down.

Question 26

(L,R) START VALVE OPEN (No MC)

Answer 26

Engine starter butterfly valve is open.

Question 27

(L,R) OIL STRAINER CLOGGING (MC)

Answer 27

Excessive differential pressure across main engine oil system filter.

Question 28

(L,R) OIL PRESS LOW (MC)

Answer 28

Low engine oil pressure.

Question 29

(L,R) INLET FUEL PRESS LOW (MC)

Answer 29

Low fuel supply pressure at engine.

Question 30

(L,R) FUEL FILTER PRESS DROP (MC)

Answer 30

Differential pressure at main engine fuel system filter.

Question 31

ART INOP (MC)

Answer 31

Failure in system that causes automatic reserves thrust to be unavailable, or ART switch is in OFF position.

Question 32

YAW DAMP OFF (No MC)

Answer 32

Yaw damper is not operating.

Question 33

MAIN CARGO SMOKE (MW)

Answer 33

Smoke detected in main cargo compartment.

Question 34

AFT AUX FUEL PUMP PRESS LOW (MC)

Answer 34

AFT AUX PUMP switches ON, TEST, AUTO but not transfering fuel (-83 only)

Question 35

FWD AUX FUEL PUMP PRESS LOW (MC)

Answer 35

FWD AUX PUMP switches ON, TEST, AUTO but not transfering fuel (-83 only) NOTE: In 961CE light will test but has no function.

Question 36

CABIN OXYGEN ON

Answer 36

OXYGEN MASK EJECT switch behind FO seat is activated. The DECOMPRESSION ALERT, OXYGEN MASK ON lights will illuminate in the supernumerary compartment.

Question 37

GPWS FAIL (No MC)

Answer 37

GPWS inop