Lighting

Question 1

How are the external lights switched on and off?

Answer 1

Switches located on the ‘external lights’ section on the overhead panel.

Question 2

How many navigation lights are installed on each wing?

Answer 2

Two.

One primary light and a secondary light that illuminates automatically when the primary light fails.

Question 3

How many rotating beacons are installed?

Answer 3

Two. One on top and another underneath.

Question 4

In addition to the beacon lights, what also comes on when the beacon light switch is turned on?

Answer 4

The flight data recorder.

Question 5

In addition to the strobe lights, what also comes on when the beacon switch is turned on?

Answer 5

The flight data recorder.

Question 6

How are the landing and taxi lights operated?

Answer 6

By switches located on the lower left of the overhead panel.

Question 7

When will the nose gear light come on?

Answer 7

When a ‘down lock’ condition is sensed on the nose landing gear and the nose gear light switch is turned on.

Question 8

What is the main difference in the lenses of the landing lights and taxi lights?

Answer 8

The taxi lights have a diffused lens so as not to blind other pilots when used on the ground.

Question 9

When to the taxi recognition lights illuminate?

Answer 9

When the onside landing light switch is pressed or the taxi recognition light switch is pressed.

Question 10

What is the purpose of the emergency lights?

Answer 10

To illuminate critical areas in the event of an emergency.

Question 11

Can the intensity of the compass light be changed?

Answer 11

Yes. In the ON position the light is full. In the DIM position the light is dimmed. There are only two settings.

Question 12

If the battery bus is the only bus powered on the aircraft, is flight deck lighting affected?

Answer 12

Yes. Certain panels will not illuminate.

Question 13

What does the display lighting knob control?

Answer 13

The intensity of the onside PFD and MFD screens.

Question 14

How is the intensity of the EICAS screens adjusted?

Answer 14

By a switch on the centre pedestal.

Question 15

How are indicator lights tested?

Answer 15

Using the lamp test switch. Either position 1 or 2 will test all indicator lights.

Question 16

When do the no smoking lights illuminate when the no smoking light switch is in the ‘auto’ position?

Answer 16

Automatically when the landing gear is extended or when the cabin altitude exceeds 10 000 ft.

Question 17

When does the seatbelt sign illuminate when the seatbelt light switch is in the ‘auto’ position?

Answer 17

When the landing gear is extended, when the flap position is greater than 0º or when the cabin altitude exceeds 10 000 ft.

Question 18

When do the ‘no smoking’ and ‘seatbelt’ lights automatically illuminate?

Answer 18

When the cabin altitude exceeds 10 000 ft.

Question 19

What comprises the emergency lights?

Answer 19

Exit signs.
Ceiling emergency flood lights.
Floor path emergency lights.
Floor level emergency lights.
Exterior emergency lights.

Question 20

How are the emergency lights powered?

Answer 20

4 independent rechargeable batteries.

Recharged by the DC essential bus.

Question 21

How long will the emergency lights battery packs last?

Answer 21

10 minutes.

Question 22

When the emergency light switch is in the ‘arm position’, when do the emergency lights come on automatically?

Answer 22

In the event of a loss of essential AC or essential DC power.

Question 23

How are the escape path markings illuminated?

Answer 23

Wit photo luminescent strips that require 15 minutes exposure to light.

Question 24

Can the flight attendant’s emergency light switch position over ride the flight deck emergency light position?

Answer 24

Yes.

Question 25

What powers the entrance dome light?

Answer 25

Main battery direct bus.