MD83 FLC MISS XING RESTR ON BUR; FERNANDO STAR. FLC CONCERNED WITH DSCNT CALCULATIONS; COCKPIT COORD AND FATIGUE.

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ZLA HAD US AT ALT; FL330; ON J-7 INSIDE OF DERBB INTXN ON THE FERN.5 ARR (FIM.FERN5). WE REQUESTED LOWER AND WERE TOLD TO EXPECT LOWER IN 7 MI. OUR PMS COMPUTER AND CREW PLANNED DSCNT PROFILE SHOWED US BEYOND THE PLANNED TOP OF DSCNT. FINALLY; WE RECEIVED LOWER; 10 MI BEYOND OUR PLANNED TOP OF DSCNT (AT APPROX 66 MI FROM FIM AT FL330). THE INITIAL LOWER WAS TO FL240. DSCNT TO FL240 WAS ACCOMPLISHED NEARLY CATCHING UP TO OUR 3:1 DSCNT PROFILE. WE WERE THEN GIVEN A DSCNT TO 12000 FT; STILL ABOVE PROFILE ON DSCNT. THE NEXT CLRNC FROM ZLA WAS TO CROSS PIRUE INTXN AT 11000 FT; IN AN EFFORT TO SLOW THE ACFT FOR THE 250 KT PIRUE RESTR AND ACHIEVE THE 10000 FT XING. WE APPEARED TO HAVE ENDED UP APPROX 1000 FT HIGH YET ON SPD AT 250 KTS. THIS FLC WAS APCHING 8 HRS BLOCK TIME FOR THE DAY; AND NEARLY 11 HRS DUTY (4 LEG DAY; WITH AN EARLY MORNING WAKE-UP CALL). THIS RPTED EVENT OCCURRING AT APPROX XA00 HRS. CREW FATIGUE SEEMED TO HAVE BEEN A FACTOR; AS MYSELF; PF; COULD NOT HAVE INITIATED A MORE AGGRESSIVE/TIMELY ACFT HANDLING TECHNIQUE TO ACHIEVE REQUESTED RESULTS. WE COULD HAVE ALSO REQUESTED RELIEF IN SPD AND/OR ALT FOR THE PIRUE XING ASSIGNMENT. ATC DID NOT QUERY US ABOUT 'WHETHER WE'D MAKE PIRUE AT 11000 FT AND 250 KTS;' (OVER PIRUE WE WERE HANDED OFF) NOR DID THEY ASK US TO PHONE THEM ON THE GND. (THE HDOF WAS TO SOCAL APCH.) SOCAL APCH IMMEDIATELY ASSIGNED US A LOWER ALT. THE ARR WAS COMPLETED AND AN UNEVENTFUL APCH AND LNDG WERE MADE TO RWY 8 BUR. SUPPLEMENTAL INFO FROM ACN 505926: WE WERE GIVEN 12000 FT (WITH NO RESTRS) SO THE FO; WHO WAS THE PF; SLOWED TO 250 KTS THINKING WE WERE GOING TO CROSS PIRUE AT 12000 FT AND 250 KTS. I MENTIONED TO STILL EXPECT THE 11000 FT; BUT HE DIDN'T ALTER HIS PLANS UNTIL CTR GAVE US 11000 FT AT PIRUE. IT WAS A LITTLE LATE; INSTEAD OF SPDING THE ACFT UP (BY INCREASING THE DSCNT RATE WITH A FASTER SPD) HE CALLED FOR SLATS EXTEND. I COMPLETED THE APCH CHKLIST; SAW WE MIGHT STILL BE TOO HIGH AND ASSUMED THE PF WOULD ADJUST THE DSCNT RATE -- HE DIDN'T. AT THE INTXN WE WERE APPROX 1000 FT TOO HIGH; THERE WAS NO CONFLICTING TFC IN THE AREA. THIS WAS OUR SECOND TIME INTO BUR THAT DAY. IT WAS VFR; WE HAD FLOWN 7 HRS 44 MINS. FATIGUE PLAYED A BIG FACTOR IN THE CREW'S LACK OF COM IN THIS EVENT.