AN LTT ACR CREW FLEW OUT THE WRONG RADIAL ON DEP. A DIFFERENT CLRNC FROM THAT WHICH WAS EXPECTED WAS RECEIVED AND ACKNOWLEDGED BUT NOT FLOWN.

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ROUTING RECEIVED JFK -- MERIT -- ORW -- V16 -- WOONS -- AS FILED. DURING CLB CLRNC RECEIVED 'HDG 030 JOIN LGA 055 DEG RADIAL MERIT.' DUE TO STRONG WESTERLY WIND; IT TOOK SEVERAL MINS TO JOIN THE RADIAL; AT WHICH TIME TURNED R AND PROCEEDED TO TRACK IT. PASSED MERIT BY 10 MI AND STILL ON LGA 055 DEG RADIAL (INCORRECTLY). CTR INQUIRED IF WE WERE ON A 'HDG' TO WHICH I RESPONDED (HAVING INSTANTLY REALIZED THAT WE PASSED MERIT) THAT WE WERE ASSIGNED LGA 055 MERIT HFD! ATC THEN ASKED WHAT ROUTING AFTER HFD AND I REPLIED (FROM MEMORY OF PREVIOUS FLTS) HFD V3 WOONS. THE CTLR THEN CLRED US DIRECT ORW V16 BOS; WHICH WAS THE ACTUAL ROUTING. ENGAGED IN NON-ESSENTIAL CONVERSATION AT THE TIME (THOUGH WE WERE AT CRUISE). I HAD THE WRONG ROUTING IN MIND BECAUSE THE MANY TIMES I HAVE GONE OVER MERIT THE NEXT FIX HAS BEEN HFD. THE ROUTING WAS NEW AND I SHOULD HAVE THOROUGHLY REVIEWED PRIOR TO DEP. HOWEVER; IN THE INTEREST OF MAINTAINING SCHEDULE (AND SINCE FO USUALLY GETS CLRNC) I OFTEN JUST REVIEW DEP AND INITIAL PART OF THE ROUTING DURING DEP BRIEFING WHILE DEFERRING THE REST UNTIL LATER.