11.14 Lights Flashcards
The left (port) Navigation light is what colour?
Red
What colour is the starboard nav light
Green
What colour nav light is located on the tail?
White
What are multi bulb navigation lights?
Redundancy systems where the wing navs are wired in parallel and lit simultaneously.
What angles do the nav lights disperse light in?
Wings 110, Tail 70 (140 total)
Why should you not handle bulbs with bare hands?
Oil from skin = local heat spots.
What are the 3 types of anti collision lights?
Rotary reflector, Rotating Bulb, Red Strobe type.
What generates the high intensity flash of a Red strobe beacon?
Strobe unit located independently of the strobe light, providing high voltage to the strobe at required flash rate.
What is important about the positioning of the white collision avoidance strobe lights?
Flash should be visible from any point around the aircraft in an area 30 degrees above and below the aircraft horizon.
White collision strobe lights due to their intensity are switched on when?
Just before takeoff and switched off after exiting the runway on landing.
Where are the power packs for strobes located?
In a water resistant area of the wing/aircraft
What is important about handling strobe light circuits?
Power must be disconnected for a period of time before touching. generally 5 minutes.
What are some precautions in regards to strobe lights?
1: Don’t look directly at operating strobe.
2: Don’t operate during refueling
3: Do not touch tube assembly.
Landing lights generate a lot of heat and cooled by ram air in flight, what precautions must be taken on the ground?
Do not test for extended periods of time.
If a quartz halogen bulb is handled how must it be cleaned?
Lead free spirit.
Why are quartz halogen bulbs used in aircraft taxi lights, landing lights and flood lights?
Envelopes made of quartz withstand much higher temperatures than glass, hotter filament also produces more light.
Where are the taxi lights positioned on the aircraft?
To the steering part of the nose landing gear.
What precautions are there when operating lights?
Do not operate for more than 5 minutes, allow time off equal to time on.
Which lighting is used for wing leading edge/ ice detection?
Sealed beam lamp
Cabin lights are used to illuminate the main cabin of the aircraft, where is the control for this system and where does it draw power from?
Flight attendant station, Ground service bus.
Cabin window lighting is run independently of other cabin lighting in most aircraft, how are these operated?
Fluorescent tubes are commonly used and most aircraft use a ballast unit instead of a fluro starter.
What automatic control does the aircraft have over the advisory sign operation?
1: Landing gear down
2: Flap selection is made
3: Cabin decompression
What are the 5 types of cockpit lighting?
1 Integral lighting
2 Post lights
3 Trans-illuminated panels
4 Floodlights
5 Utility or wander lights
Integral lighting is used to illuminate?
Flight deck instruments, both pilots are able to control their own instrument lighting via a variable transformer.
What is most commonly used lighting for aircraft panels? what are its advantages?
Trans-illuminated panels - Small amount of bulbs can illuminate a large area.
How are the utility and wanderer lights powered? and what is their purpose?
Via the hot battery bus, used in emergency situations when you’ve lost internal lighting.
What areas must emergency lighting mark?
All exits, cabin with enough internal light for crew to evacuate without outside light.
In modern aircraft the emergency exit lights have an independent nickel cadmium battery pack, if the aircraft power fails the battery does what?
Automatically switch to power the emergency light, under normal conditions battery is charged from aircrafts DC system.
During night operations what MUST be operative?
Emergency cabin lights.
What is usually the main fault in light systems?
Bulb failure, always look for failed bulbs before looking deeper into the circuit.
When checking light systems for intensity control what should be done?
Check through full intensity of range.
Master warning and caution lights are labelled “attention getters” what are they used for?
Alert crew of failures or abnormalities.
What does the amber caution light indicate?
Abnormality requiring corrective action, not a unsafe condition and can be reset.
What does the Red warning light indicate?
Condition which may affect safety of aircraft, require immediate action, extinguish when condition is cleared.
