Podcast
Questions and Answers
What is the primary function of the master caution lights and annunciators?
What is the primary function of the master caution lights and annunciators?
- To activate the attendant call system
- To provide general illumination for the passenger compartment
- To control the reading lights for passengers
- To indicate various fault conditions in the aircraft systems (correct)
What is the purpose of the 'Push to Cancel', 'Push to Recall' function on the master caution and failure annunciators?
What is the purpose of the 'Push to Cancel', 'Push to Recall' function on the master caution and failure annunciators?
- To reset the annunciators after a fault has been addressed (correct)
- To test the functionality of the annunciators
- To control the attendant call system
- To activate the reading lights in the passenger compartment
Which of the following cabin lighting systems is not mentioned in the text?
Which of the following cabin lighting systems is not mentioned in the text?
- Emergency exit lights (correct)
- Lavatory lights
- Reading lights
- Passenger information signs
What is the purpose of the 'Reading Reset' switch on the Attendant Panel?
What is the purpose of the 'Reading Reset' switch on the Attendant Panel?
What is the purpose of the 'Read Lights Test' switch on the maintenance and test panel?
What is the purpose of the 'Read Lights Test' switch on the maintenance and test panel?
What is the purpose of the 16-second delay in the reading light supply when the lights are switched on?
What is the purpose of the 16-second delay in the reading light supply when the lights are switched on?
What is the purpose of the cargo and service compartment lights?
What is the purpose of the cargo and service compartment lights?
Which type of lighting is typically used in the flight compartment?
Which type of lighting is typically used in the flight compartment?
How are the cargo and service compartment lights powered?
How are the cargo and service compartment lights powered?
What provides general illumination for the cabin in the flight compartment?
What provides general illumination for the cabin in the flight compartment?
Where is the control stand illuminated from in the flight compartment?
Where is the control stand illuminated from in the flight compartment?
What is the purpose of the lightshield in the flight compartment?
What is the purpose of the lightshield in the flight compartment?
Which position is considered the normal in-flight position of the emergency lighting switch?
Which position is considered the normal in-flight position of the emergency lighting switch?
What warning light is displayed if the emergency lighting switch is in the 'OFF' or 'ON' position during flight?
What warning light is displayed if the emergency lighting switch is in the 'OFF' or 'ON' position during flight?
In what situation do the 6V lights remain off even if there is a loss of main electrical power?
In what situation do the 6V lights remain off even if there is a loss of main electrical power?
What triggers transistor Q1 to conduct and supply power to the emergency lights?
What triggers transistor Q1 to conduct and supply power to the emergency lights?
What does the presence of an illuminated arrow spaced every 40 inches indicate on the aisle?
What does the presence of an illuminated arrow spaced every 40 inches indicate on the aisle?
What is the source of power for the 6V emergency lights under normal conditions?
What is the source of power for the 6V emergency lights under normal conditions?
What is the primary purpose of navigation lights on an aircraft?
What is the primary purpose of navigation lights on an aircraft?
Which of the following statements about the Boeing 737 navigation lights is correct?
Which of the following statements about the Boeing 737 navigation lights is correct?
What is the primary purpose of landing and taxi lights on an aircraft?
What is the primary purpose of landing and taxi lights on an aircraft?
Which of the following statements about the Boeing 737 landing lights is correct?
Which of the following statements about the Boeing 737 landing lights is correct?
What is the purpose of flare-out lights and runway turn-off lights on an aircraft?
What is the purpose of flare-out lights and runway turn-off lights on an aircraft?
What is the purpose of wing illumination lights on an aircraft?
What is the purpose of wing illumination lights on an aircraft?
What must happen for logic 'one' to be present at the non-inverting input?
What must happen for logic 'one' to be present at the non-inverting input?
How is the transistor kept off when 28 Volt is present on pin A?
How is the transistor kept off when 28 Volt is present on pin A?
What action turns on the emergency lights and floor proximity emergency lighting?
What action turns on the emergency lights and floor proximity emergency lighting?
How can the emergency lights be switched off?
How can the emergency lights be switched off?
What is a possible hazard associated with self-illuminating signs?
What is a possible hazard associated with self-illuminating signs?
Why should self-illuminating signs be handled carefully?
Why should self-illuminating signs be handled carefully?
Study Notes
External Lighting
- External lighting on an aircraft is essential for safe operation and falls into two main categories
- Types of external lighting:
- Navigation lights: mark the extremities of an aircraft and provide position reference
- Red light on left wingtip
- Green light on right wingtip
- White light on tail
- Flashing lights: mark the position of an aircraft
- Landing and taxiing lights: provide forward and lateral illumination
- Lights for wing ice inspection
- Emergency lighting for passenger evacuation
Navigation Lights
- Also known as position lights
- Voltage supply: 28V DC or 115V AC
- Navigation lights on a B737:
- Red on left wingtip
- Green on right wingtip
- White on tail
Landing and Taxiing Lights
- Provide illumination for night landing and taxiing
- Located on wing leading edge or landing gear
- Voltage supply: 28V DC or 115V AC
- Power: 600W for landing lights, 250W for taxi lights
- Boeing 737 has a total of 4 landing lights:
- 2 fixed lights on wing leading edges near fuselage
- 2 retractable lights in outboard flap track fairing
Emergency Lighting
- Emergency lights are powered by battery packs (6V)
- Switching:
- ARMED position: normal in-flight position, battery packs charged
- ON position: 6V lights on, even if main electrical power available
- OFF position: 6V lights off, battery packs charged
- Warning light: "NOT ARMED" displayed if switch is in OFF or ON position during flight
Self-Illuminating Signs
- Hazard: inhalation or absorption of gas released if sign is broken
- Signs are mildly radioactive, handle with care
Master Caution Lights
- Receive inputs from various fault annunciators
- Two master caution lights and one of twelve sections of the master caution annunciators
- Push-to-cancel, push-to-recall function
Passenger Compartment Lights
- Ceiling and window lights provide illumination
- Entry and threshold lights illuminate doorways
- Other cabin lighting systems:
- Lavatory lights
- Reading lights
- Passenger information signs
- Attendant call system
Passenger Service Unit (PSU)
- Contains:
- Reading lights
- Fasten seatbelt and no smoking signs
- Attendant call button
- Air conditioning fans
- Life vest storage
- Oxygen mask storage
Passenger Reading Lights
- Each passenger has a reading light with a touch-control button
- Reading lights can be switched off by a 'Reading Reset' switch on the attendant panel
- 'Read Lights Test' switch enables all reading lights to be switched on for inspection
Cargo and Service Lighting
- Provides illumination for cargo handling and service activities
- Dome lights and floodlights used in cargo compartments, wheel wells, and servicing compartments
- Lights can operate from internal power or external power source
- Light switches provided within the compartments
Flight Compartment Lights
- Provide illumination for flight instruments, controls, and equipment
- Dome lights provide general illumination
- Lightshield provides background lighting for pilots
- Integral lighting for each instrument and instrument panel
- Control stand illuminated by overhead floodlight
- Floodlights illuminate circuit breaker panels
Emergency Exit Signs and Floor Proximity Lights
- Emergency exit signs and floor proximity lights provide guidance during emergency evacuation
- Over-wing escape hatch lights and emergency lighting operation
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Description
Explore the importance of lighting in aircraft operations, including external lighting such as navigation lights, flashing lights, and landing lights. Learn about illumination for ice inspection and emergency evacuations. Test your knowledge on aircraft lighting systems!
