Communications -
Communication Crew Alerting System

As Installed.

The Communication Crew Alerting System is a method of notifying the flight crew about incoming calls from the cabin, ground personnel, or an incoming radio call by displaying messages on the EICAS system.

Crew Communications Messages

The Communication Crew Alerting System provides aural and visual alerts for normal operations requiring crew awareness that may require crew action. Visual alerts are presented as white lettered EICAS messages preceded by a white bullet symbol (•). The aural alert is a single chime. The flight crew should respond by pressing the corresponding switch light (alert, cabin or ground) on the pilot's call panel and establishing interphone communications with the calling station.

Communication Alert Categories

The following table shows communication crew alert categories and the respective aural and visual alerts for each category.

Alert Category Aural Visual Remarks
Medium Chime EICAS communication alert. Illumination of appropriate switch/light on the PCP or ACP. Message awareness required. Crew action may be required.
Low None EICAS communication alert. Crew action may be required.

Emergency Locator Transmitter