CIRRUS DESIGN SR20, Pilot Operating Handbook

Page: 452 / 508

12 of 16 P/N 11934-S27
Section 9 Cirrus Design
Supplements SR20
• Note •
If the course needle is at full-scale deviation, the autopilot will
establish the airplane on a heading for a 45° intercept with the
selected course. As the airplane approaches the course, the
autopilot will smoothly shallow the intercept angle. The pilot
may select an intercept angle less than the standard 45° by
setting the desired intercept heading with the HSI HDG bug,
pressing and holding HDG, and then pressing NAV once to
intercept course in NAV mode or twice to intercept course in
GPSS mode on the autopilot programmer/computer. When
the on-course intercept turn begins the HDG mode will
disengage and the annunciator will go out.
During the intercept sequence, the autopilot operates at
maximum gain and sensitivity (90% of standard rate turn).
When the selected course is intercepted, course deviation
needle centered, the course-tracking program is activated.
The system will remain at maximum sensitivity for
approximately 15 seconds while the wind correction angle is
established. The maximum turn rate is then reduced to 45%
standard rate. Approximately 60 seconds later, the maximum
turn rate is reduced to 25% standard rate.
4. For increased sensitivity during GPS approach or if desired for
enroute tracking, press the APR button on the autopilot
programmer/computer. The NAV, GPSS, and APR annunciators
will be illuminated. Use HDG to accomplish a procedure turn.
Engage GPSS again to complete the approach.
VOR Tracking and VOR-LOC Approach
1. Begin with a reliable VOR or VOR-LOC signal selected on the
NAV receiver.
2. Select desired course on the PFD and establish a desired
intercept heading.
3. Press the NAV button on the autopilot programmer/computer. The
NAV mode will illuminate. Course interception and tracking will be
as described under GPS Tracking and GPS Approach above.
4. For station passage, set HDG bug to within 5° of selected course.
Revision 2: 07-18-05