Narrative:

In level flight at 11000 ft we got a TA warning from our TCASII. Almost immediately after the TA we got an RA with a climb command. It happened so quickly that there was not enough time to use the information on our screen to look out the window and hopefully spot the traffic. Not enough time between the TA and RA that is. As soon as the climb command was given by the TCASII my first officer initiated a climb. At about the same time our climb was started we heard ZNY trying to say something to us but most of their transmission was blocked by another aircraft speaking over them. The second attempt by ZNY was heard and it was instructions for an immediate 20 degree right turn. So now we were climbing out of 11000 ft and making a right turn off the yardley 078 degree radial. By the time the TCASII had advised we could stop climbing and a smooth pushover was started, we had reached an altitude of approximately 11700 ft and we were a little south of the radial we should have been on due to the right turn. Immediately following ATC's 20 degree turn, I advised them that we had had an RA and had climbed to comply with it. They did not seem to have a problem with our altitude deviation and handed us off to new york approach. We never had the suspect aircraft in sight until after the climb was stopped and the other aircraft was well off our left wing and below us.

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Original NASA ASRS Text

Title: FLC OF AN LGT ACR ACFT CLBED OFF OF DSCNT ALT IN RESPONSE TO A TCASII RA.

Narrative: IN LEVEL FLT AT 11000 FT WE GOT A TA WARNING FROM OUR TCASII. ALMOST IMMEDIATELY AFTER THE TA WE GOT AN RA WITH A CLB COMMAND. IT HAPPENED SO QUICKLY THAT THERE WAS NOT ENOUGH TIME TO USE THE INFO ON OUR SCREEN TO LOOK OUT THE WINDOW AND HOPEFULLY SPOT THE TFC. NOT ENOUGH TIME BTWN THE TA AND RA THAT IS. AS SOON AS THE CLB COMMAND WAS GIVEN BY THE TCASII MY FO INITIATED A CLB. AT ABOUT THE SAME TIME OUR CLB WAS STARTED WE HEARD ZNY TRYING TO SAY SOMETHING TO US BUT MOST OF THEIR XMISSION WAS BLOCKED BY ANOTHER ACFT SPEAKING OVER THEM. THE SECOND ATTEMPT BY ZNY WAS HEARD AND IT WAS INSTRUCTIONS FOR AN IMMEDIATE 20 DEG R TURN. SO NOW WE WERE CLBING OUT OF 11000 FT AND MAKING A R TURN OFF THE YARDLEY 078 DEG RADIAL. BY THE TIME THE TCASII HAD ADVISED WE COULD STOP CLBING AND A SMOOTH PUSHOVER WAS STARTED, WE HAD REACHED AN ALT OF APPROX 11700 FT AND WE WERE A LITTLE S OF THE RADIAL WE SHOULD HAVE BEEN ON DUE TO THE R TURN. IMMEDIATELY FOLLOWING ATC'S 20 DEG TURN, I ADVISED THEM THAT WE HAD HAD AN RA AND HAD CLBED TO COMPLY WITH IT. THEY DID NOT SEEM TO HAVE A PROB WITH OUR ALTDEV AND HANDED US OFF TO NEW YORK APCH. WE NEVER HAD THE SUSPECT ACFT IN SIGHT UNTIL AFTER THE CLB WAS STOPPED AND THE OTHER ACFT WAS WELL OFF OUR L WING AND BELOW US.

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.