Narrative:

On the designated arrival and in a navigation descent I saw traffic on the navigation display because an RA was imminent. Questioned the controller. He stated 'turn left immediately and descend to 8;000 feet' at 200-300 feet separation visually acquired the aircraft. The TCAS had us at least 500 feet under him when he passed overhead? The ATC controller on 127.22 will have to be asked this question.

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Original NASA ASRS Text

Title: A pilot reports of not being issued traffic by ATC and observing traffic on the Navigation Display. The pilot questioned controller. The controller turned and descended aircraft. The pilot reported aircraft was 200-300 feet away when he spotted it and the aircraft passed 500 feet over the top.

Narrative: On the designated arrival and in a NAV descent I saw traffic on the NAV display because an RA was imminent. Questioned the controller. He stated 'Turn left immediately and descend to 8;000 feet' at 200-300 feet separation visually acquired the aircraft. The TCAS had us at least 500 feet under him when he passed overhead? The ATC controller on 127.22 will have to be asked this question.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.