Specifications

7-76 Information Manual
Section 7 Cirrus Design
Airplane Description SR20
Exterior Lighting
The airplane is equipped with standard wing tip navigation lights with
integral anti-collision strobe lights. The separately controlled landing
light is located in the lower cowl.
Navigation Lights
The airplane is equipped with standard wing tip navigation lights. The
lights are controlled through the NAV light switch on the instrument
panel bolster. 28 VDC for navigation light operation is supplied through
the 5-amp NAV LIGHTS circuit breaker on Non-Essential Bus.
Strobe Light
Anti-collision strobe lights are installed integral with the standard
navigation lights. Each strobe is flashed by a separate power supply.
The strobe power supplies are controlled through the STROBE light
switch on the instrument panel bolster. 28 VDC for strobe light and
control circuits is supplied through the 5-amp STROBE LIGHTS circuit
breaker on Non-Essential Bus.
Landing Light
Serials 1337 and subsequent with SRV standard configuration: The
airplane is equipped with a Halogen landing light.
A High Intensity Discharge (HID) landing light is mounted in the lower
engine cowl. The landing light is controlled through the LAND light
switch on the instrument panel bolster.
Setting the LAND light switch ’on’ energizes the landing light control
relay in the Master Control Unit (MCU) completing a 28 VDC circuit
from the airplane Main Distribution Bus to the light’s ballast located on
the firewall. The ballast provides boosted voltage to illuminate the HID
lamp. A 15-amp breaker on the Main Distribution Bus in the MCU
protects the circuit
Interior Lighting
Interior lighting for the airplane consists of separately controlled
incandescent overhead lights for general cabin lighting, individual
lights for the pilots and passengers, and dimmable panel floodlights.
The flight instrumentation and avionics equipment lights are dimmable.
March 2010