Narrative:

Air carrier X, dc-9, departed to the northwest off of stl. I issued a climb to 15000 ft. A couple of sweeps later, the captain advised that he had leveled at 2500 ft because of an RA on TCASII. No other aircraft were involved.

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Original NASA ASRS Text

Title: ACR X TCASII RA WITH FALSE TARGET. EVASIVE ACTION TAKEN.

Narrative: ACR X, DC-9, DEPARTED TO THE NW OFF OF STL. I ISSUED A CLB TO 15000 FT. A COUPLE OF SWEEPS LATER, THE CAPT ADVISED THAT HE HAD LEVELED AT 2500 FT BECAUSE OF AN RA ON TCASII. NO OTHER ACFT WERE INVOLVED.

Data retrieved from NASA's ASRS site as of July 2007 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.