Patent ID: 8878701

Claim:
An aircraft instrumentation system for a cockpit instrument panel, comprising: a first device having a standby mode and a controller mode, the first device including: a first display; and a first controller having a first set of controls for controlling the first display and aircraft systems; and a second device having a standby mode and a controller mode, the second device including: a second display; and a second controller having a second set of controls for controlling the second display and the aircraft systems; wherein at least one of the first display and the second display is in the standby mode at all times to present attitude, altitude and airspeed, and wherein the first controller controls the first display to present aircraft system data and system menus only if the second display is in the standby mode and concurrently presents attitude, altitude and airspeed and the second controller controls the second display to present aircraft system data and system menus only if the first display is in the standby mode and concurrently presents attitude, altitude and airspeed.