How many chimes indicate the activation of the flight attendant call button?

The activation of the flight attendant call button is indicated by a single chime. This single chime serves as a clear and distinct signal that a passenger or crew member has requested the attention of the flight attendants. It's designed to provide a straightforward auditory cue without confusion, ensuring that flight attendants can quickly identify when assistance is needed. The clarity of this signaling helps maintain order and allows for efficient service in the cabin, making it easier for the crew to prioritize their tasks and respond to passenger needs in a timely manner.

In contrast, other potential chime patterns may serve different functions or indicate other events, but the specific context of the flight attendant call button relies on a single chime for simplicity and immediacy.