Overview
The function of the landing and taxi lighting is to show the areas in front of the aircraft during landing and when the aircraft is taxied.
The landing and taxi lighting system has a landing light system and a taxi light system that operate independently.
11/25/15
Lighting control panel
The LIGHTING control panel on the right side of the center pedestal in the flight compartment primarily operates the external aircraft lighting. There are eight two-position and three-position toggle switches on the panel. All the switches have an OFF position. The other positions set the lights on or in ARM mode.
The WING INSP switch is a two-position switch which controls the wing inspection lights. When the switch is set in the WING INSP position the wing inspection lights are on. If the switch is in the OFF position the wing inspection lights are off.
The STROBE switch is a three-position switch. When the switch is set in the BCN position the beacon lights are on. When the switch is set in the STROBE position the strobe lights are on. If the switch is set in the OFF position the beacon and strobe lights are off.
The SMKG/BELTS switch is a three-position switch which controls the controls the annunciation lights for the smoking and belts signs in the passenger compartment (installed in completion center). When the switch set is in the BELTS position the belt signs are on. When the switch is set in the SMKG/BELTS position the no smoking and belt signs are on. If the switch is set in the OFF position the smoking and belt signs are off.
The EMER LTS switch is a three-position switch controls the emergency lights. If the switch is in the ON position the emergency lights are on. If the switch is in the OFF position the emergency lights are off. There is also an ARM mode.
On pre SB 350-33-001, the landing lights, nose gear landing light, and the taxi light are controlled by three-position switches. For the left landing light the switch positions are L and OFF. For the nose landing gear/taxi lights the switch positions are NLDG/TAXI, TAXI, and OFF. For the right landing light the switch positions are R and OFF.
On post SB 350-33-001 (optional) the pulse landing lights, nose gear landing light, and the taxi light are controlled by three-position switches. For the left pulse landing light the switch positions are L, PULSE, and OFF. For the nose landing gear/taxi lights the switch positions are NLDG/TAXI, TAXI, and OFF. For the right pulse landing light the switch positions are R, PULSE, and OFF.
On pre SB 350-33-002, the NAV switch is a two-position switch which controls the navigation lights on and off. When the switch is set in the NAV position the navigation lights only are on. If the switch is set in the OFF position the navigation lights are off.
On post SB 350-33-002 (optional) , the NAV/LOGO switch is a three-position switch which controls the navigation lights and logo lights. When the switch is set in the NAV position the navigation lights only are on. When the switch is set in the NAV/LOGO position the navigation lights and the logo lights are on. If the switch is set in the OFF position the navigation and logo lights are off.
Taxi Light
The taxi light is installed on the front right side of the nose landing gear. The taxi light is made to supply light to the ground during final approach and take-off. Also it supplies light to the approach area and the runway to see major obstruction or debris.
The taxi light is controlled by a three-position switch on the LIGHTING control panel. The taxi light will operate when the switch is set in the LANDING TAXI position. The light will only operate if the landing gear is down and locked.
The taxi light has a sealed beam lamp with a power of 250 W that gives a light intensity of 40 candles. This lamp is installed in a housing and attached by a clamp. The taxi light receives 28 VDC power from the R MAIN BUS.
Nose Gear Landing Light
The nose-gear landing light is installed on the front left side of the nose landing gear. The nose-gear landing light is made to supply light to the ground during final approach and take-off. Also it supplies light to the approach area and the runway to see major obstruction or debris.
The nose-gear landing light is controlled by the a three-position switch on the LIGHTING control panel. The nose-gear landing light and the taxi light will operate when the switch is set in the LANDING N LDG/TAXI position. The lights will only operate if the landing gear is down and locked.
The nose gear landing light is a sealed beam lamp with a power of 250 W that gives a light intensity of 150 candles. This lamp is installed in a housing and attached by a clamp. The nose gear landing light receives 28 VDC power from the R MAIN BUS.
Wing Landing Light
The high-intensity discharge (HID) wing landing lights are in the belly fairings. A transparent window (landing light cover) protects the lights. The wing landing lights supply sufficient light for night landing and ensure that no glare comes into view to the pilots. The wing landing lights are controlled by their applicable LANDING L and LANDING R two-position switches.
The wing landing light has a power of 35 W that gives a light intensity of greater or equal to 345 candles. The wing landing lights receive electrical power from the applicable wing landing light power supplies.
Landing Light Cover
The landing light cover is a transparent window installed in the leading edge of each wing, near the fuselage. It gives protection to the wing landing light. Also, the cover is made to supply a focus light pattern. The cover is made of polycarbonate and has a silicon rubber seal on its edge. It is installed with screws.
Wing-Landing-Light Power Supply (Pre SB 350-33-001)
Pre SB 350-33-001 there are two power supplies installed near the wing landing lights in the belly fairing on each side of the aircraft at FS470.00. Each wing landing light has a dedicated wing-landing-light power supply. The power supplies contain the necessary modules to change the aircraft electrical power into the operation voltage for the wing landing lights.
The wing-landing-light power supplies receive 28 VDC electrical power from the L MAIN BUS and the R MAIN BUS. Each unit supplies a nominal output of 35 W.
Pulse Landing Light (Post SB 350-33-001)
Post SB 350-33-001, the high intensity discharge (HID) pulse landing lights are installed in belly fairings. A transparent window (landing light cover) gives protection to the lights. The pulse landing lights are made to supply sufficient light for night landing and to make sure that no glare comes into view to the pilots.
The pulse landing lights are controlled by their applicable left/right three-position switches on the LIGHTING control panel. When the switch is set in the PULSE position the applicable pulse landing lights will come on and go off continuously. When the switch is set in the L and/or R position the applicable pulse landing lights will stay on. If the switch is set in the OFF position the applicable landing lights go off.
The pulse landing light has a power of 50 W. The pulse landing lights receive electrical power from the applicable pulse landing-light power-supplies.
Pulse Landing-Light Power-Supply (Post SB 350-33-001)
Post SB 350-33-001 there are two power supplies installed near the pulse landing lights in the belly fairing on each side of the aircraft at FS470.00. Each pulse landing light has a dedicated pulse landing-light power-supply. The power supplies contain the necessary modules to change the aircraft electrical power into the operation voltage for the pulse landing lights.
The pulse landing-light power-supplies receive 28 VDC electrical power from the L MAIN BUS and the R MAIN BUS. Each unit supplies a nominal output of 50 W.
System Operation
The nose-gear landing light and the taxi light have two conditions to come on:
- The applicable switch must be set
- The landing gear must be locked in the down position
These lights receive a signal from the proximity sensor electronic unit (PSEU) when the landing gear is in the down-and-locked position. This signal supplies or does not supply the electrical power for the landing gear position function. This will prevent the lights to be on when the nose landing gear is not down and locked.
When the lights have the signal from the PSEU, the applicable switches operate the lights. When the LANDING N LDG/TAXI switch on the LIGHTING control panel is set to LANDING N LDG/TAXI, the nose gear landing light and taxi light come on. When the LANDING N LDG/TAXI switch is set to TAXI, the taxi light comes on.
For the wing landing lights on pre SB 350-33-001, when the LANDING L switch is set to L, the left wing landing light comes on. When the LANDING R switch is set to R, the right wing landing light comes on.
For the pulse landing lights on post SB 350-33-001, when the left LANDING switch is set to L, the left pulse landing light comes on. When the right LANDING switch is set to R, the right pulse landing light comes on. When the left LANDING switch is set to PULSE, the left pulse landing light will come on and go off continuously. When the right LANDING switch is set to PULSE, the right pulse landing light will come on and go off continuously.
11/25/15
System Interface
The landing and taxi lighting has interfaces with the systems/components that follow:
- Proximity-Sensor Electronic Unit (PSEU)
- Navigation Lighting
- Strobe Lighting
- Wing Inspection Lighting
- Emergency Lighting System
10/28/20
Component Location Index
| Component Location Index | |||
|---|---|---|---|
| IDENT | DESCRIPTION | LOCATION | IPC REF |
| - | LIGHTING CONTROL PANEL | ZONE(S) 210 | 33-41-01 |
| DS9 | TAXI LIGHT | ZONE(S) 710 | 33-41-05 |
| DS12 | NOSE-GEAR LANDING LIGHT | ZONE(S) 710 | 33-41-09 |
| DS11 | WING LANDING LIGHT (LH) | ZONE(S) 181 | 33-41-13 |
| DS10 | WING LANDING LIGHT (RH) | ZONE(S) 181 | 33-41-13 |
| DS11 | PULSE LANDING LIGHT (LH) | ZONE(S) 181 | 33-41-13 |
| DS10 | PULSE LANDING LIGHT (RH) | ZONE(S) 181 | 33-41-13 |
| - | LANDING LIGHT COVER (LH) | ZONE(S) 181 | 33-41-17 |
| - | LANDING LIGHT COVER (RH) | ZONE(S) 181 | 33-41-17 |
| PS7 | WING LANDING LIGHT POWER SUPPLY (LH) | ZONE(S) 181 | 33-41-21 |
| PS6 | WING LANDING LIGHT POWER SUPPLY (RH) | ZONE(S) 181 | 33-41-21 |
| PS7 | PULSE-LANDING-LIGHT POWER-SUPPLY (LH) | ZONE(S) 181 | 33-41-21 |
| PS6 | PULSE-LANDING-LIGHT POWER-SUPPLY (RH) | ZONE(S) 181 | 33-41-21 |