When is it inappropriate for flight attendants to use the cabin intercom?

Using the cabin intercom for personal announcements is inappropriate because the system is designated for operational and safety-related communication. The primary function of the intercom is to ensure that important information regarding passenger safety, service, and overall flight operations is conveyed clearly and efficiently.

Personal announcements might distract from the crucial safety messages and service-related information that passengers need to hear. Safety announcements, communication with the flight crew, and safety demonstrations are all vital parts of a flight attendant's responsibilities that require the use of the intercom to maintain professionalism and ensure the safety and comfort of passengers. Thus, reserving the intercom for official messages underscores the importance of clear communication in any flight situation.