Lighting Flashcards
Describe the interior lighting.
Interior lighting consists of direct and indirect lighting for the cockpit and cabin areas.
Describe the emergency lighting.
Emergency lighting provides illumination for emergency situations during night or conditions of reduced visibility.
Which bus are the emergency lights powered from.
The lights are powered from the emergency bus.
If a complete loss of electrical power occurs, how are the emergency lights powered?
The lights are powered by FOUR dedicated emergency battery packs.
Where are the emergency battery packs found?
In the cabin walkway and lavatory.
How are the emergency battery packs charged?
The battery packs are continuously charged to capacity with DC power from the emergency buses.
How are the exterior lights powered?
By the main DC electrical system.
EMER LTS SWITCH
Operates and illuminates the cabin emergency lights.
ARM- Automatic activation.
ON- Manual activation.
OFF - System deactivation.
When will the EMER LIGHTS automatically activate? (3)
- Loss of main DC power.
- 5-G impact.
- PAX SAFETY button ON.
System duration for Emergency lights from main DC power?
Indefinitely.
System duration of the emergency lights from the Emergency DC?
60 mins.
System duration from the battery packs?
10 minutes.
Cockpit lighting switches:
PANEL
Controls light intensity for all glass gauge panel and control panel lighting.
It is main DC powered through the DAY/NIGHT button.
Cockpit lighting switches:
FLOOD
Adjusts the overhead floodlight intensity.
It is powered by the main DC bus.
Cockpit lighting switches:
EL PANEL
Controls light intensity for all electroluminescent panel lighting.
It is main DC powered through the DAY/NIGHT button.
Cockpit lighting switches:
AUX.
Adjusts the light intensity of LED lights under the glare shield.
It is emergency DC powered.
PAX SAFETY:
Illuminates the no-smoking, activates a two-tone chime,and with the EMER LTS armed, illuminates emergency cabin lighting.
EXTERNAL LIGHTING SWITCHES:
DAY/NIGHT:
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.
EXTERNAL LIGHTING SWITCHES:
ANTI-COLL.
Controls the wingtip-mounted high-intensity strobe lights.
EXTERNAL LIGHTING SWITCHES:
GND RECOG.
A red ground recognition light on top of the vertical stabilizer.
EXTERNAL LIGHTING SWITCHES:
TAXI.
Controls two nose wheel strut mounted lights.
The taxi lights only illuminate with all three squat switches indicating aircraft on the ground.
EXTERNAL LIGHTING SWITCHES:
RECOG.
With the LDG light buttons off, the single RECOG button illuminates the landing lights at a lower intensity.
EXTERNAL LIGHTING SWITCHES:
L LDG / R LDG
Buttons individually control the landing lights to the high-intensity setting.
EXTERNAL LIGHTING SWITCHES:
TAIL FLOOD.
Illuminates the vertical stabilizer for airplane identification at night.
EXTERNAL LIGHTING SWITCHES:
PULSE.
The landing lights operate in the pulse mode if the LDG and RECOG lights are selected off.
How is the baggage light powered and controlled?
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.
