OGG CTLR CONCERNED WITH HNL (HCF) TFC SEQUENCING INTO OGG.

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I WORK TWR WITH RADAR- 5 NM RADIUS AIRSPACE AT AND BELOW 025. THIS AIRSPACE IS SURROUNDED BY MAUI APCH-WORKED BY HONOLULU CERAP-NOW AT 'HCF.' THEY ARE SUPPOSED TO PROVIDE THE SEQUENCE BUT; DUE TO TERRAIN AND OUR LRAC DUTIES; THE APCH CTL OFTEN 'JAMS' US AND 'DUMPS' THEIR SEQUENCING AND SEPARATION DUTIES ON US. WE NEED A FINAL APCH SECTOR AT OUR TRACAB-WITH 15 MILES (RADIUS). (OR NOR RADAR DUTIES AT ALL). DETAILS: WITH ACR X ON VISUAL APCH ON A 'MODIFIED L BASE;' THE APCH CTLR SLOWED ACR Y AND SHIPPED IN CONFLICT WITHOUT SUFFICIENT SPACE TO FOLLOW. I WAS BUSY AT THE TIME WORKING LOCAL; GND; LRAC (ALWAYS COMBINED)-OTHERWISE I WOULD NOT HAVE ALLOWED MYSELF TO BE JAMMED. I BARELY MAINTAINED MIN SEPARATION AND ACR X HAD TO GO AROUND. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT THERE IS RECURRENT SEQUENCING PROBS BY HNL CERAP. RPTR SUGGESTS A CHANGE IN DELEGATED AIRSPACE; THAT OGG BE DELEGATED SUFFICIENT AIRSPACE TO PROVIDE THEIR OWN SEQUENCING AND THE AIRSPACE TO PROVIDE SVC TO OTHER ARPT'S ON MAUI. THE RPTR ADVISED A RADAR SITE IS LOCATED ON THE ISLAND WITH SUFFICIENT CTLR AND MNTNC PERSONNEL. AIRSPACE REDELEGATION WOULD ALLOW THE NEW HCF (HONOLULU CTL FAC-HNL CERAP) TO FOCUS ON THE GREATER INTER ISLAND TFC PICTURE; WHILE ALLOWING LCL TFC SEQUENCING TO LCL CTLR'S