Plain English Meaning

Signals from the aircraft — lights, messages, beeps, or spoken alerts — that tell the pilot something needs attention, ranging from a simple status note to an urgent problem.

Full Definition

Visual, aural, or tactile alerts presented to the pilot by aircraft systems to indicate a status, caution, warning, or advisory condition. Annunciations appear on annunciator panels, primary flight displays, multifunction displays, or as discrete lights, tones, and voice callouts, and are typically color- and tone-coded by severity (e.g., red for warning, amber for caution).

Context Anchor

Seen or heard in the when a displays a , on a , or makes a sound to get the pilot’s attention.