RPTR WANTS FLEXIBILITY TO ALTER NOISE ABATEMENT PROC ENDING TIME OF XF30 TO XF00 AM WHEN TFC BUILDUP REQUIRES ACFT TO HOLD WHILE WAITING FOR THE TFC TURN AROUND TO THE W FLOW. RPTR IMPLIES THIS WILL REDUCE OR ELIMINATE NOISE GENERATED FROM ACFT IN HOLDING E OF THE ARPT DURING THE TRANSITION PERIOD.

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THE LAX NOISE ABATEMENT PROCS ARE CAUSING ARR CTLRS TO HOLD ACFT OVER HEAVILY POPULATED AREAS. THESE ACFT ARE BEING HELD BECAUSE OF A NOISE ABATEMENT CURFEW. UNLESS THERE IS POOR WX; NO ACFT CAN LAND W BTWN XA00 AM AND XF30 AM. THE XF30 AM TIME IS THE PROB. THE ARR CTLR MUST DECIDE WHO SHOULD BE THE LAST E; AND WHO SHOULD BE THE FIRST W ARR. IF THE CTLR CHOOSES THE CORRECT ACFT; THERE WILL BE MINIMAL AMOUNT OF ACFT HELD. IF THE DECISION IS BAD; THEN NUMEROUS ACFT WILL BE HELD. THEN THERE ARE DAYS THAT THE VOLUME IS SO GREAT THAT THE CTR AND SURROUNDING SECTORS GO INTO HOLDING. THIS HOLDING CAUSES MORE NOISE AND UNNEEDED DELAYS. THIS MORNING THERE WERE 6 ACFT HELD 10-20 MI E OF LAX FOR 5-10 MINS. ALTS RANGED FROM 2500 FT TO 8000 FT. THE AREA WHERE THE HOLDING TOOK PLACE (DOWNEY; CA) IS HEAVILY POPULATED. WHY SHOULD THESE PEOPLE BE SUBJECTED TO NOISE TO MEET A CURFEW TIME? THERE IS NO 'FLOW' TO LA UNTIL AFTER THE 'TURN AROUND.' EITHER THE TMU SHOULD RUN A PROGRAM; OR WE SHOULD HAVE THE FLEXIBILITY TO 'TURN THE ARPT' AROUND EARLIER. SAY XF00 AM! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR BELIEVES THE NOISE PROC IS GOVERNED BY THE CITY AND INDICATED UNAWARENESS TO ANY EFFORT TO APCH THE CITY TO CHANGE THE ENDING TIME OF THE PROC. RPTR STATED THERE IS NO TMU ON DURING THE TFC BUILDUP PERIOD. RPTR ALLEGED THAT SOME FACILITY SUPVRS WILL CHANGE THE TFC FLOW PRIOR TO THE XF30 TIME WHILE OTHERS WILL ADHERE TO THE PROC TIME. RPTR INDICATED THAT SOME TWR SUPVRS WILL ALLOW THE E/W FLOW CHANGE AND ACCEPT ACFT PRIOR TO XF30 WHILE OTHER SUPVRS WILL NOT.