Magnetic Compass - Cirrus SR22 Pilot Operating Handbook

Cirrus Design Section 7
SR22 Airplane Description
Up to two bearing pointers can be displayed and switched to any NAV
receiver including GPS1, GPS2, NAV1, or NAV2. GPS2 and NAV2 can
only be displayed as bearing pointers, not as a primary navigation
source. The display is color-coded to indicate which navigation source
is selected: green for NAV1, yellow for NAV2, and red for GPS.
Auto Slew automatically turns the course pointer in response to
waypoint sequencing or Direct-To navigation from the GPS receiver
eliminating manual course changes at waypoints and reducing pilot
workload.
Heading and Course Sync allows the pilot, with one button, to
automatically set the heading bug directly to his current heading, or to
set the course pointer directly to a VOR station, simultaneously
centering course deviation. Course and heading command outputs for
autopilot operations are also provided.
The SN3308 detects and warns of abnormal conditions such as
flagged navigation receivers and failed directional gyro or flux detector.
It also monitors its own internal temperature and provides warnings for
over-temperature or loss of cooling conditions.
Redundant circuits paralleled through diodes at the indicator supply
DC electrical power for gyro operation. 28 VDC for the redundant
power circuits is supplied through the 5-amp HSI 1 circuit breaker on
the Essential Bus and 5-amp HSI 2 circuit breaker on Main Bus 2.
Auto Slew automatically turns the course pointer in response to
waypoint sequencing or Direct-To navigation from the GPS receiver
eliminating manual course changes at waypoints and reducing pilot
workload.
Heading and Course Sync allows the pilot, with one button, to
automatically set the heading bug directly to his current heading, or to
set the course pointer directly to a VOR station, simultaneously
centering course deviation. Course and heading command outputs for
autopilot operations are also provided.

Magnetic Compass

A conventional, internally lighted, liquid filled, magnetic compass is
installed on the cabin headliner immediately above the windshield. A
compass correction card is installed with the compass.
P/N 13772-001 7-31
Revision A5