A JETSTREAM 4100 FLIES RECOMMENDED AIRSPD BEHIND A B767 BUT FLIES SLOWER THAN RECOMMENDED TO KEEP DISTANCE FROM PRECEDING HVY AS IT SLOWS DOWN. JETSTREAM EVENTUALLY HAS A WAKE TURB ENCOUNTER AT JFK.

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15 MI OUT WE WERE TOLD TO FOLLOW A B767 TO AN ILS TO RWY 22L. WE HAD THE B767 IN SIGHT RIGHT AWAY AND TCASII RANGE SHOWED 6 MI WHICH WAS IN AGREEMENT WITH WHAT APCH TOLD US. ON LOC AND 10 MI OUT; THE B767 AND WE WERE GIVEN 180 KTS TO THE MARKER. WE WERE HOLDING 180 KTS AND I NOTICED THE TCASII RANGE WAS CLOSING. AT AN ESTIMATED 5 MI RANGE I BEGAN TO SLOW TO ATTEMPT TO HOLD 6 MI AT 165 KIAS. APCH SAID TO KEEP OUR SPD UP AS WE HAD ANOTHER HVY JET 4 MI BEHIND US. THE RANGE WITH THE B767 AHEAD STAYED STEADY AND I HELD MY SPD. AS THE GS CAME IN; I STAYED 1 DOT HIGH AND STARTED TO DSND. AT 1000 FT AGL WE HIT THE WAKE AND THE ACFT ROLLED 30 DEGS L; THEN R 30 DEGS. I RECOVERED WINGS LEVEL; ADDED PWR AND WENT 1 1/2 DOT HIGH ON GS. AT 800 FT AGL WE HIT THE WAKE AGAIN WITH THE SAME RESULTS. THE B767 WAS HIGH ON THE APCH ALL THE WAY IN AND TOUCHED DOWN 1000 FT PAST THE AIMING POINT. I ALSO LANDED LONG TO AVOID THE WAKE. MEANWHILE WE HAD RECEIVED SEVERAL CALLS FROM APCH AND TWR TO KEEP OUR SPD UP! AS WE TOUCHED DOWN BEFORE THE NOSE EVEN CAME DOWN; TWR BEGAN GIVING TAXI INSTRUCTIONS! FUNNY; I NEVER HEARD THEM DO THAT TO THE MIL JETS! ONE LEVEL OF SAFETY; MY ASS! JFK BEING OUR HOME BASE; WE TRY OUR BEST TO COOPERATE; IE; 250 KTS TO 5 MI OR 150 KTS AT 15 MI. I'D SAY THAT'S PRETTY FLEXIBLE; EH? BUT LATELY WE'VE BEEN GETTING TAKEN ADVANTAGE OF. MAYBE THOSE APCH AND TWR GUYS SHOULD BE REQUIRED TO RIDE ALONG A TURBOPROP COMMUTER TO GET A GOOD IDEA OF THE CRAP THAT WE GET TOLD TO DO SOMETIMES. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN WAKE TURB STRUCTURED CALLBACK PROGRAM. RPTR HAD A FEAR OF ENCOUNTERING THE WAKE FROM THE B767 SO HE FLEW THE AIRSPD THAT KEPT THE SEPARATION DISTANCE CONSTANT. THE B767 EVIDENTLY FLEW HIGH ON THE GS JUST AS THE RPTR DID AND RPTR ENCOUNTERED WAKE REGARDLESS OF DISTANCE IN TRAIL.