Lights and Switches

Question 1

IR FAULT - steady

Answer 1

IR is lost

- flashing - attitude and heading mode may be recovered in ATT mode

Question 2

ADR FAULT

Answer 2

-fault detected

Question 3

ELAC FAULT

Answer 3

• fault detected

- during power up test

Question 4

SEC FAULT

Answer 4

-failure detected (light extinguished when pushbutton selected off)

Question 5

GPWS TERR FAULT

Answer 5

-predictive modes fail

Question 6

HYD ENG 1/2 PUMP FAULT

Answer 6

• pump
  - low pressure
• reservoir
  - low pressure
  - high temp
  - low quantity

Question 7

HYD ELEC PUMP FAULT

Answer 7

• pump
  - low pressure
  - high temp
• reservoir
  - low pressure
  - high temp
  - low quantity

Question 8

HYD PTU FAULT

Answer 8

• reservoir
  - low pressure
  - high temp
  - low quantity

Question 9

FUEL L/R TK FAULT

Answer 9

-delivery pressure drops

Question 10

FUEL CTR TK PUMP FAULT

Answer 10

-pump is operating and delivery pressure drops

Question 11

FUEL CTR TK MODE SEL FAULT

Answer 11

-center tank has more then 550 lbs and the left or right tank has less then 11,000

Question 12

BAT 1/2 FAULT

Answer 12

-charging current is outside limits (battery contractor opens)

Question 13

GALLEY BUS ELEC SWITCH FAULT

Answer 13

-any generator load is above 100% of its rated output

Question 14

L/R TK PUMPS FAULT

Answer 14

GCU trip with line contractor open

Question 15

APU GEN FAULT

Answer 15

GCU trip with line contractor open

Question 16

IDG 1/2 FAULT

Answer 16

Hot oil temp, low oil pressure

Question 17

AC ESS FEED FAULT

Answer 17

-when not powered

Question 18

PACK 1/2 FAULT

Answer 18

-overheat/ valve disagree

Question 19

ENG 1/2 BLEED FAULT

Answer 19

• Leak - from wing or engine on associated side
• overpressure - downstream of the engine bleed valve
• overheat - from bleed
• start - bleed valve not closing during engine start
• APU - bleed valve not closed with APU BLEED pushbutton on

Question 20

APU BLEED FAULT

Answer 20

-APU leak detected

Question 21

HOT AIR FAULT

Answer 21

-overheat

Question 22

WING ANTI ICE FAULT

Answer 22

low pressure, valve disagree

Question 23

ENG 1/2 ANTI ICE FAULT

Answer 23

-valve disagree

Question 24

CABIN PRESS MODE SEL FAULT

Answer 24

Both auto modes have failed

Question 25

APU MASTER SW FAULT

Answer 25

-automatic shutdown occurs

Question 26

CARGO HEAT HOT AIR FAULT

Answer 26

• duct overheat is detected (above 88 deg C or 190 deg F)

- FAULT light extinguishes when the temp drops below 70 deg C (158 deg F) and the HOT AIR pushbutton is selected OFF

Question 27

AFT ISOL VALVE FAULT

Answer 27

-either inlet or outlet valve is in disagreement with the selected position

Question 28

BLOWER FAULT

Answer 28

• fault detected
  - pressure is low
  - duct overheat
  - computer power supply failure
  - smoke warning is activated

Question 29

EXTRACT FAULT

Answer 29

• fault detected
  - pressure is low
  - computer power supply failure
  - smoke warning is activated

Question 30

ENG MODE FAULT

Answer 30

-Automatic start abort
-disagreement between fuel valve and commanded position
-thrust control malfunction

Question 31

IR FAULT flashing

Answer 31

Attitude and heading may be recovered in ATT mode

Question 32

IR ALIGN steady

Answer 32

IR is in alignment phase

Question 33

IR ALIGN steady

Answer 33

IR is in alignment phase

Question 34

IR ALIGN flashing

Answer 34

No position, bad position or aircraft moved during alignment

Question 35

ON BAT light on

Answer 35

-One or more Its supplied by the aircraft battery
-Few seconds at the beginning of a full alignment