In TCAS, how does an inhibited RA appear on the display?

• A. Red diamond
• B. Amber circle
• C. Blue square
• D. Green circle

Answer: (B)

TCAS uses distinct symbols and colors to show the status of nearby traffic and any advisories. When a potential resolution advisory would normally be issued but is held back due to constraints (an inhibited RA), the system marks it as not yet active but still present. On the display, this status is shown as an amber circle around the intruder’s symbol. The amber color signals caution rather than an immediate maneuver, meaning you should continue to monitor the traffic and be prepared for a possible active RA if the situation changes.