Lighting

Question 1

Describe the interior lighting.

Answer 1

Interior lighting consists of direct and indirect lighting for the cockpit and cabin areas.

Question 2

Describe the emergency lighting.

Answer 2

Emergency lighting provides illumination for emergency situations during night or conditions of reduced visibility.

Question 3

Which bus are the emergency lights powered from.

Answer 3

The lights are powered from the emergency bus.

Question 4

If a complete loss of electrical power occurs, how are the emergency lights powered?

Answer 4

The lights are powered by FOUR dedicated emergency battery packs.

Question 5

Where are the emergency battery packs found?

Answer 5

In the cabin walkway and lavatory.

Question 6

How are the emergency battery packs charged?

Answer 6

The battery packs are continuously charged to capacity with DC power from the emergency buses.

Question 7

How are the exterior lights powered?

Answer 7

By the main DC electrical system.

Question 8

EMER LTS SWITCH

Answer 8

Operates and illuminates the cabin emergency lights.

ARM- Automatic activation.

ON- Manual activation.

OFF - System deactivation.

Question 9

When will the EMER LIGHTS automatically activate? (3)

Answer 9

1. Loss of main DC power.
2. 5-G impact.
3. PAX SAFETY button ON.

Question 10

System duration for Emergency lights from main DC power?

Answer 10

Indefinitely.

Question 11

System duration of the emergency lights from the Emergency DC?

Answer 11

60 mins.

Question 12

System duration from the battery packs?

Answer 12

10 minutes.

Question 13

Cockpit lighting switches:

PANEL

Answer 13

Controls light intensity for all glass gauge panel and control panel lighting.

It is main DC powered through the DAY/NIGHT button.

Question 14

Cockpit lighting switches:

FLOOD

Answer 14

Adjusts the overhead floodlight intensity.

It is powered by the main DC bus.

Question 15

Cockpit lighting switches:

EL PANEL

Answer 15

Controls light intensity for all electroluminescent panel lighting.

It is main DC powered through the DAY/NIGHT button.

Question 16

Cockpit lighting switches:

AUX.

Answer 16

Adjusts the light intensity of LED lights under the glare shield.

It is emergency DC powered.

Question 17

PAX SAFETY:

Answer 17

Illuminates the no-smoking, activates a two-tone chime,and with the EMER LTS armed, illuminates emergency cabin lighting.

Question 18

EXTERNAL LIGHTING SWITCHES:

DAY/NIGHT:

Answer 18

DAY bypasses the light rheostats and illuminates all buttons to maximum intensity.

NIGHT: dims the buttons, powered the PANEL and EL PANEL rheostats, and activates windshield ice detection lights.

Question 19

EXTERNAL LIGHTING SWITCHES:

ANTI-COLL.

Answer 19

Controls the wingtip-mounted high-intensity strobe lights.

Question 20

EXTERNAL LIGHTING SWITCHES:

GND RECOG.

Answer 20

A red ground recognition light on top of the vertical stabilizer.

Question 21

EXTERNAL LIGHTING SWITCHES:

TAXI.

Answer 21

Controls two nose wheel strut mounted lights.

The taxi lights only illuminate with all three squat switches indicating aircraft on the ground.

Question 22

EXTERNAL LIGHTING SWITCHES:

RECOG.

Answer 22

With the LDG light buttons off, the single RECOG button illuminates the landing lights at a lower intensity.

Question 23

EXTERNAL LIGHTING SWITCHES:

L LDG / R LDG

Answer 23

Buttons individually control the landing lights to the high-intensity setting.

Question 24

EXTERNAL LIGHTING SWITCHES:

TAIL FLOOD.

Answer 24

Illuminates the vertical stabilizer for airplane identification at night.

Question 25

EXTERNAL LIGHTING SWITCHES:

PULSE.

Answer 25

The landing lights operate in the pulse mode if the LDG and RECOG lights are selected off.

Question 26

How is the baggage light powered and controlled?

Answer 26

Powered from the right battery bus and controlled by a toggle switch, because with the APU running it can go on.

Closing the baggage compartment door extinguishes the light.