AN A306 CREW; DEP ABQ; TURNED PREMATURELY; NOT COMPLYING WITH THE INFORMAL NOISE ABATEMENT PROC.

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CREW REVIEWED DEP PROC; EVEN THOUGH IT WAS NOT PART OF THE CLRNC; MAKING NOTE OF THE 5750 FT RESTR BEFORE TURNING; WHICH IS ESSENTIALLY 400 FT AGL AND A NORMAL SIT. TWR CLRED FLT FOR TKOF SUFFIXED BY THE STATEMENT; 'ADHERE TO NOISE ABATEMENT PROCS;' WHICH CREW ASSUMED WAS THE 5750 FT TURN RESTR. THE VERBIAGE ON THE 10-3A IS VAGUE AND MISLEADING CONCERNING A HARD AND FAST NOISE ABATEMENT PROC. BEFORE SWITCHING TO DEP CTL FREQ TWR CTLR STATED THAT THE FLT'S TURN WAS A LITTLE EARLY; BUT THAT IT WAS OK. REGARDLESS; THIS PROC NEEDS TO BE CLARIFIED AND; IF THERE REALLY IS A HARD NOISE ABATEMENT PROC; IT NEEDS TO BE DELINEATED IN A CLEARER MANNER. SEE TRANSCRIPT FROM 10-3A ALBUQUERQUE LARGO 2 DEP: ALL ACFT FLY ASSIGNED HDG FOR VECTORS TO FILED/ASSIGNED RTE. RWY 8 DEPS; UPON PASSING 5750 FT; TURN L/R TO ASSIGNED HDG. WHEN WX CONDITIONS ARE 5000 FT CEILING AND 7 MI VISIBILITY OR GREATER; FOR INFORMAL NOISE ABATEMENT: REQUEST TURBOPROP AND TURBOJET ACFT; EXCEPT STOL ACFT; MAKING A L TURN FROM RWY 8; TO DELAY THEIR TURN UNTIL 13.5 DME FROM ABQ VOR. EXPECT CLRNC TO FILED ALT/FLT LEVEL 5 MINS AFTER DEP.