Each time a command mode is selected, both autopilot computers will respond by displaying the selected mode on the respective AFCS MODES annunciator. Each autopilot computer has an AFCS MODES annunciator located on the main instrument panel. In the example above, autopilot A is in the command position and vertical speed has been selected as a pitch command mode. The "VS" light on the Pitch Panel indicates mode selection, verification of both autopilot computers operating in the "VS" pitch mode is accomplished by observing the "VS" message in both AFCS MODES annunciators."VS" is also displayed int he PITCH Panel window (digital autopilot system only) along with the actual vertical with the actual vertical speed at the time of engagement.
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