MD88 FLT CREW ARE ADVISED BY ZDC THAT THEY MISSED THE MANDATORY XING RESTR AT ENO VORTAC AT FL240. RESTR DISSEMINATION VIA NOTAM MISSED DURING PREFLT BRIEFING.

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I WAS CLRED TO DSND VIA THE KORRY 2 ARR INTO NEW YORK. I FAILED TO CROSS SMYRNA AT OR ABOVE FL240. THIS WAS NOT LISTED ON THE ARR CHART; BUT IS POSTED VIA NOTAM. DEV WAS BROUGHT TO OUR AWARENESS BY ATC. I HAD REVIEWED THE NOTAMS BOTH PRIOR TO AND DURING THE FLT; HOWEVER; I DID NOT NOTICE OR CONNECT THE RESTR WITH MY FLT PLAN. I THEN REDUCED MY LEVEL OF AUTOMATION (REMOVED FMS) AND REDUCED THE DEV AND MADE SURE I MET OTHER RESTR WITHOUT DIFFICULTY. NEAR BRAND INTXN; I WENT BELOW 11000 FT EARLY WHILE TRYING TO COMPLY WITH AN ATC SPD REDUCTION. (NO COMMENT MADE BY ATC.) SOMETIMES MORE CTL MEANS LESS AWARENESS AND LESS TIME TO REACT TO ERRORS. I MUST STRIVE TO BE BETTER EVERYDAY; IE; NO PERFECT FLT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR IS AWARE OF THE XING RESTR AND HAS ADVISED COMPANY PLTS OF THE CHANGE. COMPANY HAS NOT ADVISED OF ANY FURTHER ADVERSE ACTION AGAINST THE CREW. RPTR ADVISED THAT COMPANY HAS ADVISED THEY WILL DISSEMINATE THE MANDATORY XING RESTR AMENDMENT THROUGH ITS SYS.