When informed that an aircraft is responding to a TCAS Resolution Advisory (RA), you should NOT which action?

When informed that an aircraft is responding to a TCAS Resolution Advisory (RA), you should NOT which action?

• A. Provide traffic advisories only
• B. Issue control instructions contrary to RA
• C. Monitor RA and wait for pilot instruction
• D. Decline to issue any instructions

Answer: (B)

When a TCAS Resolution Advisory is active, the pilot must follow the RA, and air traffic control must not issue instructions that oppose or override it. The RA is generated to prevent a near-term collision and has priority over ATC guidance because it relies on the aircraft’s vertical and lateral separation geometry. Therefore, the action to avoid is giving control instructions that contradict the RA. Instead, you should focus on non-conflicting roles—keep traffic advisories current, monitor the RA situation, and be ready to provide information or instructions that won't counter the RA, or simply await the pilot’s execution and the RA resolution to complete. The other reasonable actions—issuing only traffic advisories, monitoring the RA and waiting for pilot input, or declining to issue conflicting instructions—align with letting the RA guide the maneuver and maintaining safety.

When a TCAS Resolution Advisory is active, the pilot must follow the RA, and air traffic control must not issue instructions that oppose or override it. The RA is generated to prevent a near-term collision and has priority over ATC guidance because it relies on the aircraft’s vertical and lateral separation geometry. Therefore, the action to avoid is giving control instructions that contradict the RA. Instead, you should focus on non-conflicting roles—keep traffic advisories current, monitor the RA situation, and be ready to provide information or instructions that won't counter the RA, or simply await the pilot’s execution and the RA resolution to complete. The other reasonable actions—issuing only traffic advisories, monitoring the RA and waiting for pilot input, or declining to issue conflicting instructions—align with letting the RA guide the maneuver and maintaining safety.