Cirrus DESIGN SR20 Information Manual page 327

Cirrus Design
SR20
autopilot will synchronize to and hold the vertical speed at the time
the mode was engaged.
The vertical speed is displayed in 100-foot increments on the
programmer/computer window or on the vertical speed
indicator on the PFD. A plus (+) value indicates climb and a
negative or minus (-) value indicates descent.
4. Vertical speed can be adjusted by rotating the VS knob on the
programmer/computer or the right knob on the PFD when the VSI
bug has been selected.
A flashing VS mode annunciator indicates excessive error
between actual vertical speed and the selected vertical speed
(usually in climb). The pilot should adjust power or reduce the
commanded vertical speed as appropriate to remove the
error.
GPS tracking and GPS Approach
1. Begin with a reliable GPS signal selected on the NAV receiver.
2. Select desired course on HSI and establish a desired intercept
heading.
3. Press the NAV button on the autopilot programmer/computer
twice. The NAV and GPSS mode annunciators will illuminate.
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.
P/N 11934-S13
Revision 04: 08-15-07
• Note •
• Note •
• Note •
Section 9
Supplements
11 of 16