Aircraft Systems and Failures: Ground Proximity, Navigation, and Power Practice Test

Traffic advisories cover traffic that is nearby but not yet an immediate threat. When TCAS detects such traffic, it issues a Traffic Advisory (TA), which means you should visually scan the intruder and be ready to take action if the situation escalates, but no urgent maneuver is required right now. An immediate threat triggers a Resolution Advisory (RA), which requires prompt avoidance. The other terms listed aren’t standard TCAS volumes, so they don’t describe near-term traffic in the same way. Therefore, the TA volume best matches traffic that is near but not an immediate threat.