[Ken] recently obtained an attitude indicator—sometimes called an artificial horizon—from an F-4 fighter jet. Unlike some indicators, the F-4’s can rotate to show pitch, roll, and yaw ...

He uses this comparison: On the instrument panel of every airplane is a device called the attitude indicator. This instrument shows the pilot — even in conditions of rain, fog or darkness ...

Since the crash, investigators have focused on the main instrument Randy Carnahan used to navigate, the primary attitude indicator. Also called the artificial horizon, the attitude indicator ...