Page 24 - Volume 14 Number 4

The sandstone canyons of Lake Powell located in northern Arizona.
it takes over control of pitch and roll to satisfy the FD commands. Very rarely, if ever, do we engage the AP without it immediately following the existing FD commands. But do you realize that it can work without following the FD? Yes, it can!
Try this little experiment on a clear, visual, day. Do not select any FD mode before takeoff. The ADI should be blank – no command bars showing. As you depart the pattern – say, with a 10-degree nose up and 20-degree left bank attitude – turn on the autopilot. In some systems, you will find that the airplane maintains the existing attitude perfectly, both bank and pitch. In others, the system may hold the pitch attitude but roll wings level. Try it and see what your system does.
How can we now change pitch and bank while still leaving the FD off? Two ways: First, use the pitch wheel or rocker switch on the AP controller to modify the pitch at- titude and use the turn knob on the controller to modify the bank angle. Second, for almost all of you, hold the TCS (Touch Control Steering –
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22 • KING AIR MAGAZINE
APRIL 2020