C182 PLT ENTERS CLASS D AIRSPACE AT GEU.

Narrative

APCHING GEU FROM THE SE; I WAS RECEIVING RADAR ADVISORIES FROM LUKE APCH; WHO ADVISED ME; 'CLRED THROUGH GOODYEAR CLASS D AT OR ABOVE 2500 FT.' I TRANSITIONED THE GYR CLASS D TOWARDS GEU. 2 TO 3 MILES (APPROX) FROM GEU; LUKE APCH INSTRUCTED ME TO 'SQUAWK VFR AND CONTACT TWR.' I CHANGED TO TWR FREQ; WAITED SEVERAL SECONDS TO DETERMINE THE FREQ WAS CLR AND CALLED TWR. TWR CTLR ADVISED ME OF MY POSSIBLE DEV FOR ENTERING HIS CLASS D WITHOUT ESTABLISHING COMMUNICATIONS. I BELIEVE THAT THIS PROB WAS THE RESULT OF INCONSISTENT COORDINATION BETWEEN RADAR FACILITIES AND LOCAL CTL TWRS. NOT ONLY ARE PROCS DIFFERENT FROM LOCALE TO LOCALE; BUT THEY SEEM TO VARY FROM DAY TO DAY WITHIN LOCALES. CASE IN POINT: I'VE MADE THE EXACT SAME FLT DESCRIBED OVER A DOZEN TIMES DURING THE LAST YEAR. WHILE MY ROUTINE VARIES LITTLE; I'M ALMOST ALWAYS HANDLED DIFFERENTLY. FOR EXAMPLE; ONE TIME LUKE WILL 'DROP' ME SHORT OF GYR AND LET ME HANDLE MY OWN TRANSITION; AND THE NEXT TIME THEY WILL COORDINATE THE TRANSITION FOR ME. I AM CERTAIN THAT LUKE HAS HANDED ME OFF INSIDE GEU CLASS D BEFORE AND THE LOCAL CTLR TOOK NO ISSUE WITH IT.