Narrative:

On the south boston arrival at 8000 ft ATC advised us of 12 O'clock traffic climbing to 7000 ft within seconds of that advisory call, the TCASII issued a TA for the traffic followed by an RA. The captain who was flying the aircraft followed the RA and we climbed to 8900 ft MSL. I advised ATC that the TCASII wants us to climb. He acknowledged the call. At 8900 ft MSL we received a clear of traffic from the TCASII. I advised ATC that we have terminated the climb. He instructed us to descend and maintain 8000 ft. We did and the flight proceeded normally.

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Original NASA ASRS Text

Title: DEV FROM ASSIGNED ALT.

Narrative: ON THE S BOSTON ARR AT 8000 FT ATC ADVISED US OF 12 O'CLOCK TFC CLBING TO 7000 FT WITHIN SECONDS OF THAT ADVISORY CALL, THE TCASII ISSUED A TA FOR THE TFC FOLLOWED BY AN RA. THE CAPT WHO WAS FLYING THE ACFT FOLLOWED THE RA AND WE CLBED TO 8900 FT MSL. I ADVISED ATC THAT THE TCASII WANTS US TO CLB. HE ACKNOWLEDGED THE CALL. AT 8900 FT MSL WE RECEIVED A CLR OF TFC FROM THE TCASII. I ADVISED ATC THAT WE HAVE TERMINATED THE CLB. HE INSTRUCTED US TO DSND AND MAINTAIN 8000 FT. WE DID AND THE FLT PROCEEDED NORMALLY.

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.