Key Binding

The 727 autopilot is quite different from those used in modern aircraft. Its behavior often differs, so make sure you understand what you are binding and how.

INCREASE/DECREASE VERTICAL SPEED

Autopilot Mode	Operation
VERT SPEED (ALT HOLD not engaged)	Changes pitch to achieve +/- 100 ft/min
VERT SPEED (ALT HOLD engaged)	No effect
PITCH HOLD	Changes pitch to achieve approximately + 100 ft/min
IAS HOLD	Switches to VERT SPEED mode and changes pitch to achieve +/- 100 ft/min

INCREASE/DECREASE HEADING BUG

Decreasing rotates the HDG bug to the left, increasing rotates the HDG bug to the right

HEADING HOLD (ON/OFF/TOGGLE)

Operates the HDG SEL BUTTON

AUTOPILOT ALTITUDE HOLD (ON/OFF/TOGGLE)

Operates the HDG SEL BUTTON. Be aware that this is not an altitude hold but just an arming mode to capture the preselected altitude. It needs to be re-engaged whenever you change the preselected altitude.