ATA 33 Lights - Issue 6 January 2023 PDF

BOMBARDIER DHC 8-400 (PWC PW150) ATA 33 - LIGHTS TO BE USED FOR MAINTENANCE TRAINING PURPOSES ONLY B1/B2 MAINTENANCE TRAINING ONLY Issue 6 - January 2023 Page 1 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS GENERAL DESCRIPTION The aircraft has interior, exterior and emergency lightin...

BOMBARDIER DHC 8-400 (PWC PW150) ATA 33 - LIGHTS TO BE USED FOR MAINTENANCE TRAINING PURPOSES ONLY B1/B2 MAINTENANCE TRAINING ONLY Issue 6 - January 2023 Page 1 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS GENERAL DESCRIPTION The aircraft has interior, exterior and emergency lighting systems. These systems supply sufficient illumination for the convenience of the passengers and crew, and for the safe operation of the aircraft under all ambient light conditions. B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 2 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - LIGHTING BLOCK DIAGRAM BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS GENERAL DESCRIPTION CONTINUED Interior lighting includes: • • • • Flight compartment Passenger compartment Baggage compartments Service areas BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - INTERIOR LIGHTING BLOCK DIAGRAM BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS GENERAL DESCRIPTION CONTINUED Exterior lighting includes: • • • • • • • Approach Flare Taxi Position Recognition and Anti collision Engine and Wing inspection Logo - Optional BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - EXTERIOR LIGHTING BLOCK DIAGRAM BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS GENERAL DESCRIPTION CONTINUED Interior and exterior emergency lighting includes: • • • • • Ceiling lights Reflective floor markings Locator signs Exit signs An exterior egress light for each passenger exit The aircraft lighting system illuminates interior and exterior areas of the aircraft for normal or emergency conditions by incandescent and fluorescent lights. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - EMERGENCY LIGHTING BLOCK DIAGRAM BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS GENERAL DESCRIPTION CONTINUED provide adequate illumination during normal operation for the crew, passengers, ground personnel, and aircraft identification. The exterior lights are controlled by switches in the flight compartment. NOTE: The lighting system has the sub-systems that follow: • • • • • Flight Compartment Lights Passenger Compartment Lights Baggage and Service Compartment Lights Exterior Lights Emergency Lights The egress lights are part of the emergency lighting system and is controlled by that system. EMERGENCY LIGHTS FLIGHT COMPARTMENT LIGHTS The emergency lights system supplies interior and exterior lighting for emergency evacuation of the aircraft, or if there is a failure of the DC power system. The flight compartment lights supply sufficient illumination for the instruments, panels and other areas of the flight compartment to ensure the safe operation of the aircraft. Fixed exterior emergency egress lights are located at the left and right aft emergency exits, the front right emergency exit and the forward passenger door. PASSENGER COMPARTMENT LIGHTS Emergency lights in the passenger compartment include: The passenger compartment lights supply the general lighting requirements of the passengers and crew in the passenger compartment area. They supply adequate lighting for in boarding and deplaning the aircraft as well as illuminating the aircraft interior. They also supply reading lights and information signs for the passengers. BAGGAGE AND SERVICE COMPARTMENT LIGHTS The forward and aft baggage compartments and service compartment lights supply general lighting for the baggage and service compartment areas. The forward baggage compartment light comes ON by either opening the forward baggage compartment door, or the internal baggage access door. The aft baggage compartment lights come ON when the door is opened. EXTERIOR LIGHTS The aircraft is equipped with a series of external lights installed at various locations on the fuselage, wings, empennage, engine cowlings, and landing gear. The lights • • • Seven Emergency Ceiling Lights Emergency Escape Path Lights Emergency Identifiers and Markers All emergency lights, except emergency path lights, are powered by four 6.4V DC Ni-Cad battery packs. BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS GENERAL DESCRIPTION The flight compartment lights supply sufficient illumination for the instruments, panels and other areas of the flight compartment to ensure the safe operation of the aircraft. Flight compartment lighting is supplied by the lights that follow: • • • • • • • Panel and instrument lights Circuit breaker panel lights Dome lights Thunderstorm lights Map lights Utility lights - Pilot/Copilot and Observer reading lights Windshield wiper ice detection lights The flight compartment lights are controlled by: • • • Overhead lighting panel switches Side console switches Switches adjacent to the light source The flight compartment lights function independently, with individual lighting overlapping critical areas of operation. A single light failure will not adversely affect crew vision, and therefore, the operation of the aircraft. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - FORWARD FLIGHT COMPARTMENT LIGHTS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS GENERAL DESCRIPTION CONTINUED The flight compartment lighting system has the components that follow: • • • Panel and Instrument Lights Dome and Thunderstorm Lights Map and Utilities Lights PANEL AND INSTRUMENT LIGHTS The panel and instrument lights system supplies illumination for all the panels and instruments installed in the flight compartment. The instruments and panels are divided into six “light zones” as follows: • • • • • • Overhead Console Glare-shield Panel Forward Centre Console Aft Centre Console Pilots Flight Panel Copilots Flight Panel In addition, there are four circuit breaker panels in the flight compartment which are lighted: • • • • Right DC Circuit Breaker Panel Left DC Circuit Breaker Panel Avionics Circuit Breaker Panel 115V AC Variable Frequency Circuit Breaker Panel One circuit breaker panel light is installed above each of the four panels. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - AFT FLIGHT COMPARTMENT LIGHTS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PANEL AND INSTRUMENT LIGHTS CONTINUED 5V DC POWER SUPPLIES PURPOSE The 5V DC power supplies change 28V DC aircraft power to 5V DC lighting lamp voltage, and provide control of lamps intensity. Each of the light zones has its own variable output 5V DC power supply (PS). The six power supplies (PS1 through PS6) are located behind the wardrobe and are electrically protected by eleven circuit breakers (3314-CB1 to CB11). The circuit breakers are installed on the EMERGENCY LIGHTS/5V DC LIGHTING panel behind the wardrobe. Each power supply receives 28V DC from the aircraft power distribution system. The output from the power supplies vary from 0 to 5.7V DC. The dimmer knob is a potentiometer that adjusts the power supply output. As the dimmer knob is rotated from OFF to BRT, the output voltage increases from 0 to 5.7V DC which increases the brightness of the lights. Rotating the dimmer knob fully counter-clockwise turns off the lights. Small 5V, (1A) lamp assemblies are installed internally in the Plexiglas facing of each panel to illuminate the panel markings. The lamp assemblies are disc shaped and are secured to the back of the panels with screws and covered with black insulation tape. A ‘+’ symbol on the face of the panels indicates the position of the lamps electrical connector on the back of the panel. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - 5V DC POWER SUPPLY PACKS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PANEL AND INSTRUMENT LIGHTS CONTINUED 5V DC POWER SUPPLIES CONTINUED CONTROLS AND INDICATION Each 5V DC power supply is controlled by a dimmer knob. The dimmer knobs are labelled according to each of the six light zones which they control. Four of the six dimmer knobs are installed on the PANEL LIGHTING control panel located in the overhead console. The knobs are labelled: • • • • OVERHD CONSOLE GLARESHIELD CTR CONSOLE-FWD CTR CONSOLE- AFT BOMBARDIER DHC 8-400 (PWC PW150) B LIGHTING - 5V DC POWER SUPPLY PACKS B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 19 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PANEL LIGHTING CONTROL PANEL LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 21 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PANEL AND INSTRUMENT LIGHTS CONTINUED 5V DC POWER SUPPLIES CONTINUED CONTROLS AND INDICATION CONTINUED One of each of the remaining two dimmer knobs are installed on the pilot and copilot side consoles. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PILOT/COPILOT SIDE CONSOLE LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS OVERHEAD CONSOLE LIGHTING PURPOSE The overhead console is lighted to allow the flight crew to identify controls and indicators on the overhead console control panels under all ambient lighting conditions. The overhead console lighting illuminates the panels that follow: • • • • • • • • • • • • • • DC power control panel Ice and rain protection control panel Fire protection panel Panel lighting control panel AC power control panel Air conditioning control panel Emergency lights (caution/advisory) control panel APU control panel Exterior lights control panels, left and right Cabin altitude control panel Engine start panel Flight data recorder and ELT control panel Altitude/differential panel Cabin altitude indication panel BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - OVERHEAD CONSOLE BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS OVERHEAD CONSOLE LIGHTING CONTINUED CONTROLS AND INDICATION The overhead console lights are powered by PS1 which is controlled by the OVERHEAD CONSOLE dimmer knob. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - OVERHEAD CONSOLE DIMMER KNOB BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS OVERHEAD CONSOLE LIGHTING CONTROLS AND INDICATION CONTINUED INTERFACE The overhead console is lighted by PS1 which is controlled by the OVERHEAD CONSOLE dimmer control. Power is supplied though the PANEL LIGHTS - O/H CONS circuit breaker (5A) at location A3 on the 28V DC L MAIN BUS. The 5V DC lighting circuit is protected by circuit breakers CB1, CB2 and CB10. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - OVERHEAD CONSOLE LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS GLARE-SHIELD PANEL LIGHTS PURPOSE The glareshield is lighted to allow the flight crew to identify controls and indicators on the glareshield panel under all ambient lighting conditions. The glareshield panel lights illuminate the components that follow: • • • Flight guidance control panel Pilot clock Copilot clock CONTROLS AND INDICATION The glareshield panel lights are powered by PS2 which is controlled by the GLARESHIELD dimmer knob. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - GLARESHIELD LIGHTS DIMMER KNOB BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS GLARE-SHIELD PANEL LIGHTS CONTINUED INTERFACE The Glare-shield panel is lighted by PS2 which is controlled by the GLARESHIELD dimmer control. Power is supplied though the PANEL LIGHTS - GLARESHIELD circuit breaker (5A) at location B3 on the 28V DC L MAIN BUS. The 5V DC lighting circuit is protected by circuit breaker CB3 and CB4. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - GLARESHIELD PANEL LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CENTRE CONSOLE LIGHTS The centre console is lighted to allow the flight crew to identify controls and indicators on the centre console control panels under all ambient lighting conditions. The centre console panel lights illuminate the components that follow: • • • • • • • • • • • • • • Audio and Radio Control Display Unit (ARCDU), pilot Audio and Radio Control Display Unit (ARCDU), copilot Engine and System Integrated Display (ESID) control panel Weather radar control panel Flight Management System (FMS), pilot side Flight Management System (FMS), copilot side Standby VHF communication control unit HF communication control unit, pilot side HF communication control unit, copilot side EFIS control panel, pilot side EFIS control panel, copilot side Attitude and Heading Reference System (AHRS) control panel, pilot side Attitude and Heading Reference System (AHRS) control panel, copilot side Observer audio control panel BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - CENTRE PANEL BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CENTRE CONSOLE LIGHTS CONTINUED FORWARD CONTROLS AND INDICATION The forward centre console lights are powered by PS6 which is controlled by the CTR CONSOLE - FWD dimmer knob. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - FORWARD CENTRE CONSOLE LIGHTS DIMMER KNOB BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CENTRE CONSOLE LIGHTS CONTINUED AFT CONTROLS AND INDICATION The centre console lights are powered by PS5 which is controlled by the CTR CONSOLE - AFT dimmer knob. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - AFT CENTRE CONSOLE LIGHTS DIMMER KNOB BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CENTRE CONSOLE LIGHTS CONTINUED INTERFACE The Forward centre Console is lighted by PS6 which is controlled by the CTR CONSOLE FWD dimmer control. Power is supplied though the PANEL LIGHTS-CTR CONS FWD circuit breaker (5A) at location R3 on the 28V DC R MAIN BUS. The Aft centre Console is lighted by PS5 which is controlled by the CTR CONSOLE AFT dimmer control. Power is supplied though the PANEL LIGHTS-CTR CONS AFT circuit breaker (5A) at location S3 on the 28V DC R MAIN BUS. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - CENTRE PANEL LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PILOT AND COPILOT FLIGHT PANEL LIGHTS The pilot and copilot flight panels are lighted to allow the flight crew to identify controls and indicators on the pilot and copilot flight panels under all ambient lighting conditions. One 5V DC power supply dimmer knob is installed on the PILOT SIDE PANEL and one installed on the COPILOT SIDE PANEL. The knobs are labelled: • • PILOT FLT PNL COPILOT FLT PNL PILOT FLIGHT PANEL LIGHTS CONTROLS AND INDICATION The pilot flight panel dimmer knob is located on the pilot side console and is labelled: • PILOT FLT PNL BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PILOT SIDE CONSOLE FLIGHT PANEL BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PILOT AND COPILOT FLIGHT PANEL LIGHTS CONTINUED PILOT FLIGHT PANEL LIGHTS CONTINUED CONTROLS AND INDICATION The pilot flight panel lighting illuminates the pilot side panel and pilot index control panel. The Pilot Side Panel dimmer knob also controls the integral lighting of the indicator that follows: Intergrated Standby Instrument (ISI) BOMBARDIER DHC 8-400 (PWC PW150) 1. Intergrated Standby Instrument (ISI) LIGHTING - PILOT CONTROLLED INSTRUMENT PANEL LIGHTING BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PILOT AND COPILOT FLIGHT PANEL LIGHTS CONTINUED PILOT FLIGHT PANEL LIGHTS CONTINUED INTERFACE The pilot instrument panel and side console are lighted by PS3 which is controlled by the PILOT FLT PNL dimmer control. Power is supplied though the PANEL LIGHTSPLT FLT circuit breaker 5A at location C3 on the 28V DC L MAIN BUS. The 5V DC lighting circuit is protected by circuit breaker CB11. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PILOT FLIGHT PANEL LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PILOT AND COPILOT FLIGHT PANEL LIGHTS CONTINUED COPILOT FLIGHT PANEL LIGHTS CONTROLS AND INDICATION The copilot flight panel dimmer knob is located on the copilot side console and is labelled COPILOT FLT PNL. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - COPILOT SIDE CONSOLE BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PILOT AND COPILOT FLIGHT PANEL LIGHTS CONTINUED COPILOT FLIGHT PANEL LIGHTS CONTINUED CONTROLS AND INDICATION The copilot flight panel lighting illuminates the copilot side panel and copilot index control panel. The copilot Side Panel dimmer knob also controls the integral lighting of the components that follow: • • Landing gear control panel GPWS/Hydraulic control panel Individual standby instrument lighting is supplied by internal miniature lamps integral to the instruments. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - COPILOT CONTROLLED INSTRUMENT PANEL LIGHTING BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS PILOT AND COPILOT FLIGHT PANEL LIGHTS CONTINUED COPILOT FLIGHT PANEL LIGHTS CONTINUED INTERFACE The copilot instrument panel and side console are lighted by PS4 which is controlled by the COPILOT FLT PNL dimmer control. Power is supplied though the PANEL LIGHTS - COPLT FLT circuit breaker (5A) at location Q3 on the 28V DC R MAIN BUS. The 5V DC lighting circuit is protected by circuit breaker CB9. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - COPILOT FLIGHT PANEL LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CIRCUIT BREAKER PANEL LIGHTS Circuit breaker panel lights provide light for the flight crew to view the circuit breakers under all ambient light conditions. A light installed on the pilot side of the flight compartment bulkhead illuminates the avionics circuit breaker panel. A light installed above the pilot side window illuminates the left DC circuit breaker panel. A light installed on the copilot side of the flight compartment bulkhead illuminates the 115V AC circuit breaker panel. A light installed above the copilot side window illuminates the right DC circuit breaker panel. 28V DC fixed intensity power is supplied to the left and right side circuit breaker panel lights. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - CIRCUIT BREAKER PANEL LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CIRCUIT BREAKER PANEL LIGHTS CONTINUED CONTROLS AND INDICATION The CIRCUIT BREAKER PNL LTG switch on the pilot side console controls the illumination of these two lights. It is a two position on-off switch. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PILOT SIDE CONSOLE FLIGHT PANEL LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CIRCUIT BREAKER PANEL LIGHTS CONTINUED CONTROLS AND INDICATION CONTINUED The CIRCUIT BREAKER PNL LTG switch on the copilot side console controls the illumination of these two lights. It is a two position on-off switch. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - COPILOT SIDE CONSOLE FLIGHT PANEL LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS CIRCUIT BREAKER PANEL LIGHTS CONTINUED INTERFACES Power to the avionics and left dc circuit breaker panel lights is supplied through the STORM/PNL CB PNL LTS circuit breaker (5A) at location J3 on the L ESSENTIAL BUS. Power to the 115V AC and right dc circuit breaker panel lights is supplied through the COPLT CB PNL LTS circuit breaker (5A) at location L4 on the R ESSENTIAL BUS. BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS DOME LIGHTS The dome lights supply general lighting of the flight compartment in addition to the panel and instrument lights. There are two dome lights. They are installed in the flight compartment ceiling panels above the pilot and copilot. They also supply illumination in an emergency, if there is a loss of flight compartment lighting. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - DOME LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS DOME LIGHTS CONTINUED CONTROLS AND INDICATION The dome lights are controlled by either the STORM-OFF-STORM/DOME (S1), or the DOME (S2) switch, on the PANEL LIGHTING control panel in the overhead console. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - DOME LIGHTS SWITCH BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS DOME LIGHTS CONTINUED INTERFACE When the STORM/DOME (S1) position is selected, the dome lights are powered through the FLT COMP DOME LTS circuit breaker (5A) at location N2 on the 28V DC LEFT SEC BUS. Relay K2 is energized and power is supplied to the dome lights. When the DOME (S2) position is selected, the lights are powered through the FLT COMP DOME LTS circuit breaker (5A). This circuit breaker is located at J1 on the BATTERY POWER BUS on the right dc circuit breaker panel. When relay K2 is de-energized, the dome lights are powered directly from the BATTERY PWR BUS. If both switches are selected, power will be supplied from the 28V DC LEFT SEC BUS only. This will isolate the two sources of power from each other. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - STORM/DOME LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS THUNDERSTORM LIGHTS The thunderstorm lights supply additional lighting to the pilot and copilot instrument panels as a precaution against momentary blindness after a lightning flash. There are eight thunderstorm lights. Six of these lights are installed in a row under the glareshield. The two remaining lights are installed on the glareshield-to-side console fairings at each end of the glareshield. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - THUNDERSTORM LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS THUNDERSTORM LIGHTS CONTINUED CONTROLS AND INDICATIONS The thunderstorm lights are controlled by the three position STORM-OFF-STORM/ DOME switch located on the PANEL LIGHTING control panel in the overhead console. When the switch is turned to the STORM position, the thunderstorm lights come on. When the switch is turned to the STORM/DOME position, the thunderstorm and the dome lights come on. When the switch is turned to the OFF position, both lights are off. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - THUNDERSTORM LIGHTS SWITCH BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS THUNDERSTORM LIGHTS CONTINUED INTERFACE Electrical power for the thunderstorm lights is supplied through the STORM/PLT CB PNL LTS circuit breaker (5A) at location N3 on the 28V DC LEFT SEC BUS. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - STORM/DOME LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS MAP LIGHTS The map lights provide the pilot and copilot with spot lighting for their map table. There are two map lights installed in the flight compartment. They are installed below the pilot and copilot side windows respectively. The lights are installed on a fixed mounting but are directionally adjustable. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - MAP LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS MAP LIGHTS CONTINUED CONTROLS AND INDICATION Each map light is controlled by an adjacent dimmer/potentiometer control knob labelled MAP LIGHT DIMMER. The control knob rotates from full counter-clockwise (OFF) to full clockwise (BRT). BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - MAP LIGHT DIMMER KNOB BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS MAP LIGHTS CONTINUED INTERFACE Power to the pilot map light is supplied through the PLT MAP LTS circuit breaker (5A) at location D3 on the 28V DC LMAIN BUS. Power to the copilot map light is supplied through the COPLT MAP LTS circuit breaker at location P3 on the 28V DC R MAIN BUS. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - MAP AND UTILITIES LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS UTILITIES LIGHTS The utility lights supply incandescent spot lighting of the pilot and copilot areas. There are three utility lights (reading lights) supplied for the flight crew: one each for the pilot, copilot and observer. Two lights are installed in the ceiling panel directly over the pilot and copilot respectively. The third light for the observer is installed in the overhead ceiling panel in the flight compartment threshold. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - UTILITIES LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS UTILITIES LIGHTS CONTINUED CONTROLS AND INDICATIONS The pilot and copilot utility lights are controlled by an adjacent dimmer/potentiometer control knob labelled FLIGHT COMP. The control knob rotates from full counterclockwise (OFF) to full clockwise (BRT). The observer reading light is controlled with an adjacent dimmer/potentiometer that is wired to provide only ON/OFF functioning of the light. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - UTILITIES LIGHTS DIMMER KNOB BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS UTILITIES LIGHTS CONTINUED INTERFACE Four 5 VDC power supplies are installed on the side of the avionic rack electrical assembly and accessed through the wardrobe. Power to the pilot utility light is supplied through the PLT MAP LTS circuit breaker (5A) at location D3 on the 28V DC L MAIN BUS. Power to the copilot utility light is supplied through the COPLT MAP LTS circuit breaker at location P3 on the 28V DC R MAIN BUS. Power to the observer reading light is supplied through the FLT COMP DOME LTS circuit breaker (5A) at location N2 on the 28V DC LEFT SEC BUS. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - UTILITIES LIGHT DIMMER UNITS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - MAP AND UTILITIES LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 87 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS ICE DETECTION LIGHTS Ice Detection Lights supply lighting of the wiper arm mounted ice detection posts. There are two ice detection lights installed on the top, outboard ends of the glareshield panel shroud. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - ICE DETECTOR LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS ICE DETECTION LIGHTS CONTINUED CONTROLS AND INDICATION The lights are controlled by the W/S WIPER ICE DETECT LIGHT momentary-on push button switches located on the pilot and copilot side consoles. When these switches are selected ON, they illuminate a stand-off post located on each windshield wiper blade arm. The light reflects off the post and supplies the pilot and copilot with an indication of icing conditions. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PILOT/COPILOT SIDE CONSOLE LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS FLIGHT COMPARTMENT LIGHTS ICE DETECTION LIGHTS CONTINUED INTERFACE Power to the pilot ice detection switch is supplied through the STORM/PLT CB PNL LTS circuit breaker (5A) at location J3 on the 28V DC L ESS BUS. Power to the copilot ice detection switch is supplied through the COPLT CB PNL LTS circuit breaker (5A) at location L4 on the 28V DC R ESS BUS. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PILOT/COPILOT ICE DETECTION LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS The passenger compartment lights supply the general lighting requirements of the passengers and crew in the passenger compartment area. They supply adequate lighting for boarding and deplaning the aircraft as well as illuminating the aircraft interior. They also supply reading lights and information signs for the passengers. GENERAL DESCRIPTION Passenger compartment lighting include the systems that follow: • • • • • • Boarding Lights Cabin Ceiling Lights Cabin Sidewall Lights Reading Lights and Information Signs Lavatory Lights Galley Lights BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS GENERAL DESCRIPTION Passenger compartment lighting include the systems that follow: • • • • • • Boarding Lights Cabin Ceiling Lights Cabin Sidewall Lights Reading Lights and Information Signs Lavatory Lights Galley Lights B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 95 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CONTROL AND INDICATION The passenger compartment lights are controlled from the forward flight attendant panel which is located on the forward bulkhead next to the airstair door. Membrane-type switches on the forward flight attendant panel control the passenger compartment lights. The switches are identified as follows: • • • • • • • • • BOARDING CABIN OVERHD CABIN SIDEWALL PSU TEST PSUON/OFF AIRSTAIR DOOR LAVATORY DIM OVERHD DIM SIDEWALL An indicator light on each switch comes on to verify system operation. BOMBARDIER DHC 8-400 (PWC PW150) B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 97 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CONTROL AND INDICATION There are two types of flight attendant panels: Flight attendant panels without sleep mode (Wessex Advanced Switching Products) Flight attendant panels with sleep mode (EMTEQ) The flight attendant panel with the sleep mode has a power−saving feature to conserve the battery power when the aircraft is not in use. When only aircraft battery power is available, the flight attendant panel will monitor the status of the boarding lights only. The boarding lights are the only system controlled from the flight attendant panel that gets electrical power directly from the aircraft batteries. If the boarding lights are in the off position, the panel will go into the sleep mode. In the sleep mode the panel minimizes power consumption and appears de−energized. When the boarding lights pushbutton is pushed, the boarding lights will come on and the panel comes out of the sleep mode. The panel will also come out of the sleep mode when the electrical busses that supply the other systems controlled from the flight attendant panel are energized. The cabin temperature, the NVS, and the lights other than the boarding lights, get their electrical power from the 28 VDC main, essential or secondary busses. When power is applied, these functions will remember their last condition (on or off). BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS LIGHTING - FLIGHT ATTENDANT LIGHTING CONTROL PANEL BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS BOARDING LIGHTS The cabin boarding lights supply adequate lighting for the passengers and crew when boarding and deplaning. There are two boarding lights, a lower threshold and a forward boarding light. The lower threshold boarding light is located in the forward flight attendant bulkhead, just above floor level on the forward side of the passenger airstair door entrance. This light illuminates the entrance floor and, when the airstair is lowered, illuminates the top step of the airstair door. The forward boarding light is located in the ceiling, aft of the flight compartment door, on the aircraft centreline. This light illuminates the general area between the flight compartment and the airstair door. TRAINING INFORMATION POINTS To avoid loss of battery power, the boarding lights must not be left on unless external DC power is available. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - BOARDING LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS BOARDING LIGHTS CONTINUED CONTROLS AND INDICATION A membrane touch pad switch, on the forward flight attendant panel controls the boarding and airstair lights. The switch labelled BOARDING controls the lower threshold and forward boarding lights. A red LED indicator light in the switch is always on which identifies the switch when first boarding in the dark. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - BOARDING LIGHT SWITCH BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS BOARDING LIGHTS CONTINUED INTERFACE The boarding lights are powered through the BOARDING LTS circuit breaker (5A) at location H1 on the BATTERY BUS on the right DC circuit breaker panel. BOMBARDIER DHC 8-400 (PWC PW150) On Pre ModSums 4−457787 AND 4−126450 LIGHTING - BOARDING LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) Post ModSums 4-457787 OR 4-126450 LIGHTING - BOARDING LIGHTS WIRING SCHEMATIC - LED BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 107 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS AIRSTAIR DOOR LIGHTS The airstair door tread lights illuminate the steps of the airstair door. There are four airstair lights. Each light is installed in the top centre part of one of the stair risers. The light from each unit illuminates the stair tread below it. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - AIRSTAIR LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS AIRSTAIR DOOR LIGHTS CONTINUED CONTROLS AND INDICATION A membrane touch pad switch, labelled AIRSTAIR, on the forward flight attendant panel controls the airstair lights. A red LED indicator light in the switch comes on when it is selected on. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - AIRSTAIR DOOR LIGHTS SWITCH BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - AFT ENTRY AIRSTAIR BOARDING LIGHT B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 112 of 278 BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 113 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS AIRSTAIR DOOR LIGHTS CONTINUED INTERFACE The airstair lights are powered through the EXT LTS AIRSTAIR circuit breaker (7.5A) at location E2 on the 28V DC L MAIN BUS. BOMBARDIER DHC 8-400 (PWC PW150) On Pre ModSums 4−457787 AND 4−126450 LIGHTING - AIRSTAIR LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN CEILING LIGHTS General passenger compartment lighting is supplied by overhead lighting units located in the ceiling. There are 10 lighting units on the right side of the cabin ceiling and 11 lighting units on the left side. Each lighting unit has a ballast inverter and a lamp fixture with one fluorescent light tube. On Post ModSums 4−457787 OR 4−126450 The overhead ceiling lights are replaced from the fluorescent type lamps to the LED type lights. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - CABIN CEILING LIGHTS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN CEILING LIGHTS CONTINUED CONTROLS AND INDICATION The CABIN OVERHD membrane touch pad switch on the forward flight attendant panel controls the cabin ceiling lights. A red LED indicator light on the switch itself comes on when the switch is selected on. If installed, the DIM OVERHD membrane touch pad switch controls the intensity of the ceiling lights. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - CABIN OVERHEAD LIGHTS SWITCHES BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN CEILING LIGHTS CONTINUED INTERFACE When the CABIN OVERHD switch is in the on position, relay K1 is energized which supplies 28V DC to the two groups of ballast inverters. The left side ceiling lights are powered through the CABIN LTS PWR 1 circuit breaker (20A) at location S2 on the 28V DC R MAIN BUS. The right side ceiling lights are powered through the CABIN LTS PWR 2 circuit breaker (20A) at location S1 on the 28V DC R MAIN BUS. The control of the ceiling lights energizing of relay K1 is supplied through the CABIN LTS CONT circuit breaker (5A) at location R2 on the 28V DC R MAIN BUS. ON POST MODSUMS 4-457787 OR 4-126450: The left−side overhead lights are powered through the CABIN LTS / PWR 1 circuit breaker (15A) at location S2 on the R MAIN dc bus, on the right dc circuit breaker panel. The right−side overhead lights are powered through the CABIN LTS PWR 2 circuit breaker (15A) at location S1 on the R MAIN dc bus, on the right dc circuit breaker panel. The control of the ceiling lights (necessary to energize relay K1) is supplied through the CABIN LTS / CONT circuit breaker (5A) at location R2 on the R MAIN dc bus, on the right dc circuit breaker panel. The overhead ceiling lights are replaced from the fluorescent type lamps to the LED type lights. BOMBARDIER DHC 8-400 (PWC PW150) ON PRE MODSUMS 4-457787 OR 4-126450 LIGHTING - CABIN CEILING LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) ON POST MODSUMS 4-457787 OR 4-126450 LIGHTING - CABIN CEILING LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 123 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN CEILING LIGHTS CONTINUED ACCENT LIGHTS ON POST MODSUMS 4-457787 OR 4-126450 Accent lighting is provided by the accent light assemblies and the underwing ceiling panel accent lights. Accent light assemblies are located along the center aisle of the passenger cabin except for under the wing box where they are replaced by the underwing accent lights. There are 11 accent lighting assemblies and four individual underwing accent lights. The accent light assemblies are installed above the overhead bins in a such way that one light assembly points towards a right overhead bin. Each accent light illuminates the handle of its respective storage bin when closed, and the interior of the bin when opened. In the wing box area, the underwing accent lights replace this function. Accent lights are controlled by the accent light pushbutton switch on the flight attendant panel. This provides 28V DC power from the CABIN ACCENT LTS CONT circuit breaker (5A) to the relay K2. The relay when energized, supplies power from CABIN ACCENT LTS PWR1 (5A) to the accent lights. B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 124 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - ACCENT CEILING LIGHT SWITCH B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 125 of 278 BOMBARDIER DHC 8-400 (PWC PW150) Emergency Lighting LIGHTING - ACCENT CEILING LIGHT BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - ACCENT LIGHT − WIRING SCHEMATIC B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 127 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN SIDEWALL LIGHTS The lights are installed with the light source positioned to supply wash lighting to the sidewall/window reveal area. Cabin sidewall lighting is supplied by lighting units located in the lower part of the Passenger Service Units (PSU) adjacent to the cabin sidewall. B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 128 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - SIDEWALL LIGHTS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN SIDEWALL LIGHTS CONTINUED CONTROLS AND INDICATION The CABIN SIDEWALL membrane touch pad switch on the forward flight attendant panel controls the cabin sidewall lights. A red LED indicator light on the switch itself comes on when the switch is selected on. If installed, the DIM SIDEWALL membrane touch pad switch controls the intensity of the sidewall lights. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - CABIN SIDEWALL LIGHTS SWITCHES BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS CABIN SIDEWALL LIGHTS CONTINUED INTERFACE When the CABIN SIDEWALL switch is in the on position, relay K1 is energized which supplies 28V DC to the lights. The left side cabin sidewall lights are powered through the CABIN SIDEWALL LTS PWR 1 circuit breaker (20 A) at location P2 on the 28V DC L SEC BUS. The right side ceiling lights are powered through the CABIN SIDEWALL LTS PWR 2 circuit breaker (20 A) at location A1 on the 28V DC R SEC BUS. The control of the cabin sidewall lights (energizing of relay K1) is supplied through the CABIN SIDEWALL LTS CONT circuit breaker (5A) at location Q2 on the 28V DC L SEC BUS. POST MODSUMS 4-457787 OR 4-126450 The left−side sidewall lights are powered through the CABIN SIDEWALL LTS / PWR 1 circuit breaker (15A) at location P2 on the L SECONDARY dc bus,on the left dc circuit breaker panel. The right−side sidewall lights are powered through the CABIN SIDEWALL LTS PWR 2 circuit breaker (15A) at location A1 on the R SECONDARY dc bus, on the right dc circuit breaker panel. The control of the cabin sidewall lights (necessary to energize relay K1) is supplied through the CABIN SIDEWALL LTS / CONT circuit breaker (5A) at location Q2 on the L SECONDARY dc bus, on the left dc circuit breaker panel. The sidewall lights are replaced from the fluorescent type lamps to the LED type lights. BOMBARDIER DHC 8-400 (PWC PW150) PRE MODSUMS 4-457787 OR 4-126450 LIGHTING - CABIN SIDEWALL LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) POST MODSUMS 4-457787 OR 4-126450 LIGHTING - CABIN SIDEWALL LIGHTS WIRING SCHEMATIC - LED BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 135 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS Reading lights provide illumination of the passenger seating area regardless of ambient lighting conditions. Information signs let passengers know of emergency exit locations, pilot and flight attendant instructions, and the availability of the lavatory. The forward and aft flight attendant positions are also supplied with reading lights. READING LIGHTS PASSENGER SERVICE UNIT (PSU) The Passenger Service Units (PSU) are located on the left and right side of the cabin above each pair of passenger seats. Overhead reading lights are installed in the PSU for each passenger. There are also bulbs that light up the NO SMOKING and FASTEN SEAT BELT signs in each PSU. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER SERVICE UNIT LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED READING LIGHTS CONTINUED CONTROLS AND INDICATION In each PSU there are two reading lights and a touch-type switch to control each reading light. The outboard light and switch is supplied for the window seat passenger. The inboard light and switch is for the aisle seat passenger. A flight attendant call switch is provided in each PSU. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER SERVICE UNIT DETAIL BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED READING LIGHTS CONTINUED CONTROLS AND INDICATION CONTINUED The PSU ON/OFF membrane touch pad switch on the forward flight attendant panel controls the reading lights. When the switch is selected to the OFF position, the reading lights are inoperative. When the switch is selected to the ON position, each reading light is controlled by its individual switch on the PSU. A red LED indicator light in the PSU ON/OFF switch comes on when the switch is selected on. The PSU TEST membrane touch pad switch on the forward flight attendant control panel is used to test all the reading lights. When the switch is selected on, all the reading lights come on and any unserviceable lights can be identified. A red LED indicator light in the switch comes on when the switch is selected on. All the reading lights will remain on until they are selected off individually or the PSU ON/OFF switch is selected to the OFF position. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PSU LIGHTS SWITCHES BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED READING LIGHTS CONTINUED INTERFACE PASSENGER The left side reading lights are powered through the READING LT L circuit breaker (20A) at location Q1 on the 28V DC R MAIN BUS. The right side reading lights are powered through the READING LT R circuit breaker (20A) at location R1 on the 28V DC R MAIN BUS. ON POST MODSUMS 4-457787 OR 4-126450 The ceiling panel and the threshold boarding lights are replaced from the fluorescent lamps to the LED lights. The passenger left−side reading lights are powered through the READING LTS L circuit breaker (7.5A) at location Q1 on the R MAIN dc bus, on the right dc circuit breaker panel. The passenger right−side reading lights are powered through the READING LTS R circuit breaker (7.5A) at location R1 on the R MAIN dc bus, on the right dc circuit breaker panel. BOMBARDIER DHC 8-400 (PWC PW150) PRE MODSUMS 4-457787 AND 4-126450 PASSENGER READING LIGHTS _ WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) POST MODSUM 4-45787 or 4-126450 PASSENGER READING LIGHTS WIRING SCHEMATIC - LED BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 145 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED READING LIGHTS CONTINUED INTERFACE FLIGHT ATTENDANT The forward and aft flight attendants are also supplied with reading lights. The flight attendants reading lights are powered through the ATT RDG LTS circuit breaker (5A) at location Q1 on the 28V DC L SEC BUS. BOMBARDIER DHC 8-400 (PWC PW150) Pre ModSums 4-457787 AND 4-126450 LIGHTING - FLIGHT ATTENDANT READING LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) Post ModSums 4−457787 AND 4−126450 LIGHTING - FLIGHT ATTENDANT READING LIGHTS WIRING SCHEMATIC B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 148 of 278 BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 149 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED INFORMATION SIGNS PASSENGER SERVICE UNIT (PSU) In addition to the reading lights and switches, each PSU also has a flight attendant call button, a NO SMOKING symbol, a FASTEN SEAT BELT symbol and a loudspeaker. There is also a PSU in the lavatory which has an attendant call switch and a RETURN TO SEAT sign. A separate lighting circuit is supplied for each symbol and sign. The symbols and signs are visible only when on. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER SERVICE UNIT FA CALL BUTTON BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED INFORMATION SIGNS CONTINUED PASSENGER SERVICE UNIT (PSU) CONTINUED CONTROLS AND INDICATIONS The PSU ON/OFF switch on the forward flight attendant panel controls the operation of these symbols and information signs. When the switch is in the OFF position, the PSU symbols and information signs are inoperative. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PSU LIGHTS SWITCHES BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED INFORMATION SIGNS CONTINUED PASSENGER SERVICE UNIT (PSU) CONTINUED INTERFACE When the switch is in the ON position, 28V DC power is supplied to the PSU. The circuits for the PSU symbols and signs are powered through the PASS WARN SIGNS circuit breaker (7.5A) at location H3 on the L ESSENTIAL BUS. BOMBARDIER DHC 8-400 (PWC PW150) Pre ModSums 4−457787 AND 4−126450 LIGHTING - PASSENGER WARNING LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) Post ModSums 4−457787 AND 4−126450 LIGHTING - PASSENGER WARNING LIGHTS WIRING SCHEMATIC B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 156 of 278 BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 157 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED COMBINATION SIGNS There are several passenger information signs located throughout the aircraft. Four individual information signs are installed in the combination sign unit located on the forward ceiling panel, above the flight compartment door as follows: • • • • EXIT sign NO SMOKING sign or symbol FASTEN SEAT BELT sign or symbol LAVATORY OCCUPIED sign Three individual information signs installed in the two advisory light panels located on the center ceiling panels, along the center aisle as follows: One individual information sign installed in the advisory light panel located on the aft ceiling panel, at the rear of the cabin as follows: Two individual information signs installed in a combination sign unit located on the forward−flight−attendant control panel, on the end cap assembly, aft of the passenger door as follows: BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED COMBINATION SIGNS One individual information sign installed in the advisory light panel located on the aft ceiling panel, at the rear of the cabin as follows: Two individual information signs installed in a combination sign unit located on the forward−flight−attendant control panel, on the end cap assembly, aft of the passenger door as follows: A single return−to−seat sign installed in the PSU located in the lavatory. B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 159 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER INFORMATION SIGNS BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 161 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED INFORMATION SIGNS CONTINUED COMBINATION SIGNS CONTINUED The aft cabin ceiling combination sign displays the EXIT sign, NO SMOKING symbol and FASTEN SEAT BELT symbol. In addition, at the G3 galley ceiling, facing the floor, is another combination sign, visible by the flight attendant whether seated or standing. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER INFORMATION SIGNS BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED INFORMATION SIGNS CONTINUED CONTROLS AND INDICATIONS The passenger information signs are controlled from the passenger warning panel on the lower right side of the overhead console in the flight compartment. The NO SMOKING switch turns on all the NO SMOKING signs and symbols. The FASTEN BELTS switch turns on the FASTEN SEAT BELT signs and symbols and it also turns on the RETURN TO SEAT sign in the lavatory. The NO SMOKING signs also come on when the landing gear is selected to the down position. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER WARNING PANEL DETAIL BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS READING LIGHTS AND INFORMATION SIGNS CONTINUED INFORMATION SIGNS CONTINUED INTERFACE The PSEU supplies a ground to relay K1 which energizes the relay and turns on the NO SMOKING signs. Power for the FASTEN SEAT BELT and NO SMOKING signs and symbols is supplied through the PASS WARN SIGNS circuit breaker (7.5A) at location H3 on the L ESSENTIAL BUS. The PSU ON/OFF pushbutton also controls the operation of the lavatory sign. When the LAVATORY pushbutton is pressed to the ON position, 28 vdc power is supplied to the lavatory PSU. The circuit for the PSU sign is powered through the PASS WARN SIGNS circuit breaker (7.5A) at location H3 on the L ESSENTIAL dc bus. When the LAVATORY pushbutton is pushed to the OFF position, the lavatory sign is off. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - PASSENGER WARNING LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS WARDROBE LIGHTS The wardrobe light is illuminated by a light located on the roof of the wardrobe. CONTROLS AND INDICATION The wardrobe light is controlled by a micro-switch that powers the light. INTERFACE Power for the wardrobe light is supplied via the WRB & BAGGAGE LT circuit breaker a location K2 on the Left Essential DC Bus. BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS LAVATORY LIGHTS On aircraft without ModSums 4−457787 AND 4−126450 incorporated, fluorescent lights supply either full or dim illumination to the forward lavatory. On aircraft with ModSums 4−457787 OR 4−126450 incorporated, LED lights supply either full or dim illumination to the forward lavatory. The lavatory lights are either on or dim when the aircraft is powered. The lavatory door latch micro−switch control the operation of the lights. When the lavatory door latch is in the unlocked position, power is supplied to the lavatory lights for continuous illumination. When the lavatory door latch is in the locked position, the micro−switch is activated and the lights provide full illumination (bright). On the forward−flight−attendant control panel when the LAVATORY push−button is pushed, a red indicator light and the LAVATORY sign comes on. A flight−attendant call button is supplied in the PSU for service call. The lavatory lights are powered through the LAVATORY LTS circuit breaker (7.5A) at location R2 on the L SECONDARY dc bus. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - LAVATORY LIGHTS LOCATOR BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS LAVATORY LIGHTS CONTINUED On aircraft with MS 4−309208 incorporated, the aft lavatory has a LED lights unit to supply full or dim illumination to the aft lavatory. A push switch is located on the high−up on the aft face of the lavatory and when the switch is pushed the inter lighting and the lavatory available indication light illuminates. The lavatory door micro−switch control the operation of the lights. When the lavatory door latch is in the unlocked position, power is supplied to the lavatory lights for continuous dim illumination. When the door latch micro switch is locked position, the lavatory LED lights goes to bright illumination and at the same time the red diagonal bar (lavatory occupied) in the oval sign illuminates on the forward face of the lavatory. The two LED lights are installed at the forward and aft lavatory. One additional LED ceiling light is installed adjacent to the aft lavatory. This additional LED light provides sufficient intensity to charge the floor mounted photoluminescent emergency escape path lighting feature installed along the center aisle. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - LAVATORY LIGHT SWITCH BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS LAVATORY LIGHTS CONTINUED INTERFACE The lavatory lights are powered through the LAVATORY LTS circuit breaker (7.5A) at location R2 on the 28V DC L SEC BUS. BOMBARDIER DHC 8-400 (PWC PW150) On Pre ModSums 4−457787 OR 4−126450 LIGHTING - LAVATORY LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) On Post ModSums 4−457787 OR 4−126450 LIGHTING - LAVATORY LIGHTS WIRING SCHEMATIC - LED BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 177 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS PASSENGER COMPARTMENT LIGHTS GALLEY LIGHTS On pre NextGen aircraft Two lights supply overhead illumination to the galley. The lights are installed in the aft−flight attendant area, on the left and right ceiling panel. Each lighting unit has a lamp fixture with two fluorescent lamps and a dual ballast inverter. On NextGen aircraft Two lights supply overhead illumination to the galley. The lights are installed in the aft−flight attendant area, on the left and right ceiling panel. Each lighting unit have LED lights. Push−buttons, located on the galley control panel, near the top of the galley, control the operation of these lights. The galley has also a worklight to supply illumination to its countertop area. INTERFACE Power is supplied through the GALLEY PWR circuit breaker (20A) at location B1 on the R SECONDARY dc bus. BOMBARDIER DHC 8-400 (PWC PW150) Pre ModSums 4−457787 OR 4−12645 LIGHTING - GALLEY LIGHTS WIRING SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) Post ModSums 4−457787 OR 4−12645 LIGHTING - GALLEY LIGHTS WIRING SCHEMATIC B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 180 of 278 BOMBARDIER DHC 8-400 (PWC PW150) INTENTIONALLY LEFT BLANK B1/B2 - Issue 6 - January 2023 ATA 33 - LIGHTS Page 181 of 278 BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS BAGGAGE AND SERVICE COMPARTMENT LIGHTS Baggage and service compartment lights supply general lighting for the baggage and service compartment areas. GENERAL DESCRIPTION The forward and aft baggage compartment lights come automatically when their respective baggage doors are unlocked. The baggage and service compartment lights system contain the subsystems that follow: • • Baggage Compartment Lights Refuel Panel Service Lights The aircraft has three lights for the baggage areas. The baggage compartment lights supply light for loading and unloading baggage and to aid in maintenance related work. Lights in both compartments are controlled automatically by the door mechanism. The aircraft has a fixed refuel panel service light, installed on the right nacelle, refuel/ defuel access panel to illuminate this area. The refuel/defuel panel light supplies light during operation of the refuel/defuel panel and comes on automatically when the access door is unlocked. FORWARD BAGGAGE COMPARTMENT LIGHTS A single dome light is located in the forward baggage compartment and is controlled by a switch located on the forward baggage compartment door mechanism, or a micro-switch controlled by opening of closing the inner access door. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - FORWARD BAGGAGE COMPARTMENT LIGHT LOCATION BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS BAGGAGE AND SERVICE COMPARTMENT LIGHTS AFT BAGGAGE COMPARTMENT LIGHTS Two lights are located in the aft baggage compartment. The lights are also controlled by the operation of the baggage compartment door. CONTROLS AND INDICATION When a baggage door is unlocked, the light of the associated compartment will automatically come on. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - AFT BAGGAGE COMPARTMENT LIGHTS LOCATION BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING SYSTEMS BAGGAGE AND SERVICE COMPARTMENT LIGHTS INTERFACE The baggage compartment lights are protected by the circuit breakers that follow: • • AFT BAGGAGE (K2) on the L Essential DC Bus (5A) FWD BAGGAGE (L2) on the L Essential DC Bus (5A) The forward baggage compartment light is powered from the Left Essential DC Bus through a 5A circuit breaker labelled LIGHTS-FWD BAGGAGE. The aft baggage compartment lights are powered from the left essential DC bus through a 5A circuit breaker labelled LIGHTS-AFT BAGGAGE. BOMBARDIER DHC 8-400 (PWC PW150) LIGHTING - BAGGAGE COMPARTMENT LIGHTS SCHEMATIC BOMBARDIER DHC 8-400 (PWC PW150) LIGH