How do flight attendants communicate changes in cabin conditions to passengers?

Flight attendants communicate changes in cabin conditions primarily via the passenger service announcement system. This method is effective because it allows them to reach all passengers quickly and efficiently, ensuring that everyone receives the same information simultaneously. Announcements can cover important updates such as turbulence, flight delays, or changes in cabin pressure, which are essential for passenger safety and comfort.

Using the announcement system eliminates the delays that could occur if attendants were to speak individually with each passenger or rely on printed notices, which may not be seen by all. Additionally, while requesting feedback forms may provide valuable input from passengers after the flight, it is not an effective method for communicating immediate changes in cabin conditions. Therefore, utilizing the passenger service announcement system is the most appropriate and efficient way for flight attendants to relay important information.