Narrative:

Our medium large transport was northbound VMC at FL280. Received initial TA aurally and on map. Indicated 1000 below us sbound climbing within 10 NM. Followed immediately by RA showing 700 ft below climbing and closing. 'Monitor vertical speed' aural followed as we leveled at 28500. ATC advised that our RA target was level FL270. No conflict or visual sighting occurred. Resumed FL280. No further events.

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Original NASA ASRS Text

Title: AN ACR MLG FOLLOWED A TCASII ADVISORY. THE RPTR'S ACFT WAS AT FL280, THE INTRUDER ACFT AT FL270.

Narrative: OUR MLG WAS NBOUND VMC AT FL280. RECEIVED INITIAL TA AURALLY AND ON MAP. INDICATED 1000 BELOW US SBOUND CLBING WITHIN 10 NM. FOLLOWED IMMEDIATELY BY RA SHOWING 700 FT BELOW CLBING AND CLOSING. 'MONITOR VERT SPD' AURAL FOLLOWED AS WE LEVELED AT 28500. ATC ADVISED THAT OUR RA TARGET WAS LEVEL FL270. NO CONFLICT OR VISUAL SIGHTING OCCURRED. RESUMED FL280. NO FURTHER EVENTS.

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.