DOC AIRBUS | AMM A320FTAXI AND TAKE OFF LIGHTS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The taxi and take-off light system illuminates the runway during the taxi and the take off phase. Two light units provide the lighting. They are installed on the nose landing gear.
** ON A/C NOT FOR ALL The taxi and take-off light system illuminates the runway during the taxi and the take off phase. Two light units provide the lighting. They are installed on the nose landing gear.
2. Component Location
Taxi and Take off Lights - Component Location ** ON A/C NOT FOR ALL
Taxi and Take off Lights - Component Location ** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL Taxi and Take off Lights - Component Location ** ON A/C NOT FOR ALL Taxi and Take off Lights - Component Location ** ON A/C NOT FOR ALL | ------------------------------------------------------------------------------- |
| FIN ! FUNCTIONAL DESIGNATION ! PANEL!ZONE!ACCESS ! ATA |
| ! ! ! ! DOOR ! REF. |
| ------------------------------------------------------------------------------- |
| 4LR SW-EXT LT/NOSE 25VU 210 |
| 5LR RELAY-PWR SPLY, TO LT 107VU 126 |
| 6LR RELAY-PWR SPLY, TAXI LT 107VU 126 |
| 7LR LT-TAKE OFF 711 33-46-11 |
| 8LR LT-TAXI 711 33-46-12 |
3. System Description
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL
For ZODIAC Light unit with incandescent lamp technology or ZODIAC Light unit and Honeywell Light unit with halogen lamp technology the taxi and take-off light system consists of:
For GLS LEDs Light Unit technology the taxi and take-off light system consists of:
The 115 VAC busbar 204XP supplies power to the taxi light through the circuit breaker 1LR and relay 6LR. The 115 VAC busbar 103XP supplies power to the take off light through the circuit breaker 3LR and relay 5LR. The 28 VDC busbar 202PP supplies power to the switch 4LR through the circuit breaker 2LR. The landing-gear computer supplies the power supply relays 5LR and 6LR with a ground signal when the nose landing gear is downlocked.
** ON A/C NOT FOR ALL Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL For ZODIAC Light unit with incandescent lamp technology or ZODIAC Light unit and Honeywell Light unit with halogen lamp technology the taxi and take-off light system consists of:
- A single filament light (or halogen lamp in alternate solution) 8LR, rated at 450 Watts, installed on the nose landing gear in a fixed position
- A transformer, to produce rated operating voltage
- A single filament light (or halogen lamp in alternate solution) 7LR, rated at 600 Watts, installed on the nose landing gear in a fixed position
- A transformer, to produce rated operating voltage
- Two power supply relays 5LR for the takeoff and 6LR for the taxi light
- A switch 4LR, on the cockpit overhead panel.
For GLS LEDs Light Unit technology the taxi and take-off light system consists of:
- A series of LED lights 8LR, rated at 70 Watts, installed on the nose landing gear in a fixed position
- A transformer, to produce rated operating voltage
- A LED light 7LR, rated at 220 Watts, installed on the nose landing gear in a fixed position
- A transformer, to produce rated operating voltage
- Two power supply relays 5LR for the takeoff and 6LR for the taxi light
- A switch 4LR, on the cockpit overhead panel.
The 115 VAC busbar 204XP supplies power to the taxi light through the circuit breaker 1LR and relay 6LR. The 115 VAC busbar 103XP supplies power to the take off light through the circuit breaker 3LR and relay 5LR. The 28 VDC busbar 202PP supplies power to the switch 4LR through the circuit breaker 2LR. The landing-gear computer supplies the power supply relays 5LR and 6LR with a ground signal when the nose landing gear is downlocked.
4. Operation/Control and Indicating
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL
With energized busbars and closed circuit breakers, 115 VAC is supplied to the contacts of the power relays. The control switch is supplied with 28 VDC. When the nose landing gear is downlocked, the power supply relays get a ground signal. When the control switch 4LR is in the TAXI position, the relay 6LR energizes and the taxi light 8LR comes on.
With the switch 4LR in the T.O position, the relay 5LR energizes and continues to energize the relay 6LR. The taxi light 8LR and the take off light 7LR come on.
When the nose landing gear is unlocked, the ground signal for the power supply relays is removed.
The take off light and the taxi light go off.
You can also switch off the lights with the switch 4LR in the OFF position.
Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL Taxi and Take off Lights - Schematic ** ON A/C NOT FOR ALL With energized busbars and closed circuit breakers, 115 VAC is supplied to the contacts of the power relays. The control switch is supplied with 28 VDC. When the nose landing gear is downlocked, the power supply relays get a ground signal. When the control switch 4LR is in the TAXI position, the relay 6LR energizes and the taxi light 8LR comes on.
With the switch 4LR in the T.O position, the relay 5LR energizes and continues to energize the relay 6LR. The taxi light 8LR and the take off light 7LR come on.
When the nose landing gear is unlocked, the ground signal for the power supply relays is removed.
The take off light and the taxi light go off.
You can also switch off the lights with the switch 4LR in the OFF position.