FLC CLAIM THAT THE DEP CTLRS AT PHX ARE ISSUING DEP HDGS TO ACFT THAT VIOLATE NOISE ABATEMENT PROCS FOR THE ARPT.

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DEPARTED RWY 8R AT PHX. NOISE ABATEMENT INSTRUCTION SAYS NO TURNS BEFORE 4 NM FIX. ATC IS GIVING DIRECT SJN (ST JOHN) AT ABOUT 2 - 2 1/2 MI. SINCE ATC DIRECTION TAKES PRECEDENCE (POSSIBLE CONFLICT WITH OTHER ACFT; ETC) FOR SAFETY REASONS; A CONFLICT IS BEING CREATED BTWN THE CITY OF PHOENIX NOISE ABATEMENT REQUIREMENT AND THE FAA CLRNC. WE FOLLOWED CLRNC FROM ATC; BUT THAT GENERATED AN INQUIRY FROM THE CITY OF PHOENIX NOISE ABATEMENT OFFICE. SUGGEST ATC AND CITY OF PHOENIX COORDINATE TO ELIMINATE THIS DANGEROUS CONFLICT. SUPPLEMENTAL INFO FROM ACN 413904: ON SEP/XA/98 ATC CLRED ACR X TO DEPART PHX VIA THE ST JOHNS 2 DEP AS CLRED. AFTER XING PXR; ACR X PROCEEDED TO APPROX 3 MI E ON THE 075 DEG RADIAL; AT WHICH TIME PHX DEP CLRED THE FLT DIRECTLY TO ST JOHNS VOR (SJN). AN IMMEDIATE TURN WAS MADE TOWARD THE SJN VOR AS FILED. PHX DEP PROCS TO THE E SPECIFY AN EXIT GATE OUT TO THE PXR 4 DME POINT PRIOR TO TURNS FOR NOISE ABATEMENT. IF THIS IS A HARD FAST RULE REQUIRING MANDATORY COMPLIANCE; THE CLRNC SHOULD NOT HAVE BEEN ISSUED TO ACR X TO PROCEED DIRECTLY TO SJN UNTIL THE 4 DME FIX WAS REACHED.