ATA 33 Lights

Question 1

What are the characteristics of the annunciator lights power supply

Answer 1

5 VAC
400 Hz

Question 2

Which busbars supply the annunciator lights through transformers?

Answer 2

• AC1 supply
• AC2 supply
• 115 VAC static inverter bus
• Essential supply

Question 3

Which busbar is available for annunciator lighting in emergency supply?

Answer 3

Static inverter bus

Question 4

Apart from the 5 VAC 400 Hz supply for the annunciator lights, what else do the transformers produce in terms of lighting?

Answer 4

6.3 V full-wave rectified to supply the AUTO LAND, MASTER WARNING and CAUTION lights and ACPs

Question 5

Why does each light transformer have two primary inputs?

Answer 5

To get the correct dimming level

Question 6

In cabin lighting, what provides the continuous dimming between 100% to 5% BRT level?

Answer 6

Advanced Integrated Ballast Units

Question 7

What is the intensity of the left forward entry light if the engines are running and the cockpit door is open?

Answer 7

10%

Question 8

What happens to the cabin lighting if there is a rapid decompression?

Answer 8

100% brightness

Question 9

Where are the scenarios used for varying lighting in the cabin stored?

Answer 9

CAM

Question 10

What does the exterior system lighting include?

Answer 10

• Taxi, turn-off lights
• Navigation, strobe, beacon, wing lights
• Take-off and landing lights

Question 11

How is the near end of life of an LED wingtip light indicated?

Answer 11

Blue LED which flashes

Question 12

What indication is there that a landing light is extended?

Answer 12

Memo message ‘LAND LT’ is displayed on the EWD

Question 13

When will the landing light come on automatically?

Answer 13

Only when it is fully extended

Question 14

What are the three positions of the landing light switch?

Answer 14

ON/OFF/RETRACT

Question 15

When will both runway turn off lights come on?

Answer 15

Only when the NLG is downlocked

Question 16

What are the conditions for turning on the logo lights?

Answer 16

• Main gear struts are compressed, or
• Flaps are extended at least 15°

Question 17

What colour are the high-intensity flashing lights?

Answer 17

Red

Question 18

What are the three positions of the strobe lights?

Answer 18

ON: Strobe lights flash white
AUTO: Strobe lights come on automatically when the main gear strut is not compressed
OFF: Strobe lights are off

Question 19

When will the ECAM message ‘STROBE LT OFF’ be displayed?

Answer 19

If the strobe lights are set to OFF and aircraft in flight

Question 20

Where is the power supply unit for the tail cone strobe light?

Answer 20

THS compartment

Question 21

What external lights are synchronised to operate together in a sequence?

Answer 21

Strobes and anti-collision lights

Question 22

What voltage supplies are used in the internal emergency lights?

Answer 22

All except lavatory auxiliary lights - 6 VDC
Lavatory auxiliary lights - 28 VDC

Question 23

What are the types of light used in external emergency lights?

Answer 23

Bulbs technology

Question 24

When will EXIT signs and emergency escape hatch handle lights come on, even with the EMER EXIT LT set to OFF?

Answer 24

When the NO SMOKING switch is in the ON position or in AUTO position with landing gear extended

Question 25

What is the duration of supply from the EPSUs?

Answer 25

10 minutes

Question 26

When will the cabin emergency lighting come on when the EMER EXIT LT switch is in the ARM position?

Answer 26

When the 115V AC NORM BUS isn't available

Question 27

What indication is there that a beacon light is nearing its end of life?

Answer 27

Double flash of the light

Question 28

What are the four parts of the classic FAP?

Answer 28

* Air conditioning * Light * Audio * Water and miscellaneous