AN MD11 LOW TIME PIC FAILS TO MAKE AN ALT XING RESTR AT DYLIN INTXN; NJ.

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OUR FLT WAS FILED AND CLRED TO DSND VIA DYLIN 1 ARR INTO EWR. ZDC ON 2 SEPARATE FREQS TOLD US TO FLY 'BEST FORWARD SPD.' THE CTLR ON THE THIRD FREQ ASKED FOR 310 KIAS OR GREATER. THERE WAS FREQ SATURATION DURING THE LATER STAGES OF THE DSCNT PROFILE. N90 ASSIGNED A 070 DEG HDG TO MAINTAIN AFTER DYLIN. THE ACFT CROSSED DYLIN APPROX 1500 FT ABOVE THE REQUIRED 8000 FT MSL. NEITHER CTR NOR APCH ADVISED US OF ANY FLT VIOLATIONS OR OF A FAILURE TO FOLLOW DIRECTIVES. CAPT WAS INEXPERIENCED IN HIS SEAT AND DESIGNATED A 'HIGH MINIMUMS' CAPT. THE FMS/FMC NEVER GAVE A MISSED ALT OR EXCEEDING AIRSPD WARNING. AS FO AND PNF; I SUGGESTED TO THE CAPT ON 2 TO 3 OCCASIONS HE NEEDED TO SLOW DOWN TO MAKE THE ALT RESTR AT DYLIN BECAUSE OF THE 250 KIAS RESTR BELOW 10000 FT MSL. AIRSPD REMAINED APPROX 330-340 KIAS DURING THE DSCNT AND THROTTLES WERE BACK (IDLE WHENEVER I HAD THE OPPORTUNITY TO OBSERVE). DURING THE LATTER PHASES OF THE DSCNT; I WAS MAKING RADIO CHANGES AND AN IN RANGE CALL TO NEWARK OPS FOR GATE ASSIGNMENT. I ASSUMED WE WOULD MAKE THE 8000 FT MSL RESTR AT DYLIN AND WAS SURPRISED TO SEE THE ALTDEV. I BELIEVE THE MAJOR FACTORS CONTRIBUTING TO THE MISSED ALT WERE: THE CAPT'S INEXPERIENCE WITH THE ARR AND ACFT AUTOMATION; CTR REQUESTING HIGH SPD DSCNT SEVERAL TIMES DURING HIGH PLT WORKLOAD; RADIO FREQ SATURATION. CAPT DID DEPLOY FULL SPD BRAKES NEAR BOTTOM OF DSCNT AND ASKED ME TO REQUEST TO DELETE AIRSPD RESTR. THIS CREATED CONFUSION BECAUSE THERE WAS NO AIRSPD RESTR ON THE ARR; AND I DIDN'T THINK ATC COULD DELETE THE 250 KIAS RESTR BELOW 10000 FT MSL. THE CAPT DID NOT EXCEED 250 KIAS BELOW 10000 FT MSL TO THE BEST OF MY KNOWLEDGE. I DID NOT DO AN ADEQUATE JOB OF BACKING UP THE CAPT DURING THE ARR. SUPPLEMENTAL INFO FROM ACN 536239: AFTER SOMTO WE LEVELED OFF AT 10000 FT TO SLOW TO 250 KTS. ZDC HANDED US OFF TO ZNY. WE CROSSED DYLIN AT 9400 FT. ZNY GAVE US VECTORS UNTIL WE WERE ABLE TO FIT IN WITH THE TFC FLOW. FMS SHOWED US ON PROFILE AND SPD AT DYLIN. CONTRIBUTING FACTORS ARE 3-FOLD: RELIANCE ON FMS. LACK OF SPD COORD BTWN ZDC AND ZNY. I'M A NEW CAPT WITH 60 HRS PIC IN A JET. IF I HAD A CHANCE TO DO THIS OVER; I WOULD HAVE EITHER; ASKED FOR A HIGH SPD DSCNT TO 8000 FT BY ZDC; OR PUT A BIT MORE BRAIN PWR TO ASSURE THE FMS IS GOING TO ACCOMPLISH THE DESIRED TASK.