Narrative:

We were level at FL250 and the TCASII showed a TA traffic at 11 O'clock and 14 mi coming at us. The TCASII went to an RA with the instructions to 'climb, climb'. The first officer disconnected autoplt and began a climb when I visually saw the aircraft who was at FL240 going by our left side. We stopped climb at 25250 ft and returned to FL250.

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Original NASA ASRS Text

Title: ACR MLG ALTDEV EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.

Narrative: WE WERE LEVEL AT FL250 AND THE TCASII SHOWED A TA TFC AT 11 O'CLOCK AND 14 MI COMING AT US. THE TCASII WENT TO AN RA WITH THE INSTRUCTIONS TO 'CLB, CLB'. THE FO DISCONNECTED AUTOPLT AND BEGAN A CLB WHEN I VISUALLY SAW THE ACFT WHO WAS AT FL240 GOING BY OUR L SIDE. WE STOPPED CLB AT 25250 FT AND RETURNED TO FL250.

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.