Vertical Modes; Vertical Speed (Vs) Mode; Indicated Airspeed (Ias) Mode; Altitude Hold (Alt) Mode, Manual Capture - Piper CHEROKEE ARCHER II Pilot Operating Handbook

VERTICAL MODES

VERTICAL SPEED (VS) MODE

1. Altitude Preselect ......................................................................................... SET to Desired Altitude
2. Press VS Key, autopilot synchronizes to the airplane's current vertical speed.
3. Vertical Speed Reference ............................................................... ADJUST using UP / DN Wheel
4. Green ALT ........................................................................................ VERIFY Upon Altitude Capture

INDICATED AIRSPEED (IAS) MODE

1. Altitude Preselect ......................................................................................... SET to Desired Altitude
2. Press IAS Key, autopilot synchronizes to the airplane's current indicated airspeed.
3. AIRSPEED Reference ...................................................................... ADJUST using UP / DN Wheel
4. Adjust throttle as required ................................................................... INCREASE POWER to climb
5. Green ALT ........................................................................................ VERIFY Upon Altitude Capture

ALTITUDE HOLD (ALT) MODE, MANUAL CAPTURE

1. When at the desired altitude .................................................................................... PRESS ALT key
The autopilot will hold the altitude at which the ALT key was pressed.
If climbing or descending at a high rate when the ALT key is pressed, the airplane will overshoot
the reference altitude and then return to it. The amount of overshoot will depend on the vertical
speed when the ALT key is pressed.
The altitude reference is displayed in the autopilot status box. The reference may be changed by
+/- 200 FT using the UP / DN wheel.
AFMS – GFC 500 Autopilot in Piper PA-28 Series
Page 4–2
DECREASE POWER to descend
190-02291-07 Rev. 4