C421 PLTS INCURRED IWA CLASS D AIRSPACE ON DEP IN THE PHX AREA.

Narrative

BEFORE DEP FROM THE CHANDLER ARPT; I DECIDED WE SHOULD USE THE SID PROC IN ORDER TO GIVE US TIME TO CLB ABOVE THE PHX CLASS B AIRSPACE. THE DEP PROC IS BASICALLY DIRECT S TO THE STANFIELD VOR. ALTHOUGH WE WERE HEADED N; I FELT THAT A COUPLE OF EXTRA MINS WAS WORTH AVOIDING THE CLASS B AIRSPACE. UPON ARR AT THE ACFT I DISCUSSED THIS PLAN WITH THE OTHER PLT WHO INFORMED ME THAT IT WOULD BE BETTER TO DEPART TO THE N UNDER THE CLASS B AIRSPACE. I BELIEVE HIS REASONING WAS THAT IT WOULD SAVE TIME AND FUEL -- 2 THINGS WE WOULD BE SHORT ON DURING THIS LONG TRIP WITH SOME STIFF HEADWINDS. BY THIS TIME I WAS ALREADY IN THE ACFT AND HAD TO ORGANIZE A RTE QUICKLY SO WE COULD GET MOVING. LOOKING AT THE CHARTS; A TURN DIRECT TO THE WILLIAMS/GATEWAY VOR WOULD KEEP US CLR OF THE CLASS B AIRSPACE. ONCE WE WERE NEAR THE VOR; A TURN TO THE N WOULD ALLOW US SAFE PASSAGE TO THE N AROUND FALCON FIELD AND SCOTTSDALE. UNFORTUNATELY; IN MY HASTE TO KEEP US CLR OF THE CLASS B AIRSPACE; I NEGLECTED THE FACT THAT WILLIAMS CLASS D AIRSPACE OVERLAPS CHANDLER AND EVEN THAT WILLIAMS WAS CLASS D. AFTER DEP FROM THE RIGHT SWBOUND RWY WE WERE CLRED FOR AN IMMEDIATE L TURN AND FREQ CHANGE. THE FACT THAT WE WERE GIVEN THE FREQ CHANGE SO SOON AFTER DEP CAUSED AN ALARM TO GO OFF IN MY HEAD. I TOLD THE OTHER PLT TO LEVEL OFF AT 3500 FT MSL AND I CHKED MY CHARTS. BY THE TIME I REALIZED WHAT HAD OCCURRED WE WERE INSIDE THE W CORNER OF WILLIAMS AIRSPACE. I GAVE THE PLT AN IMMEDIATE TURN TO THE N AND I SWITCHED OVER TO WILLIAMS TWR. I ESTIMATE WE INCURRED THE AIRSPACE BY ABOUT 1/4 - 1/2 NM BASED ON THE GPS GND TRACK DISPLAY. IT SEEMED AS THOUGH WE WERE IN THE AIRSPACE AS QUICKLY AS WE WERE OUT OF IT. ONCE I WAS SURE WE WERE CLR; I GAVE THE OTHER PLT A TURNOUT E OF FALCON FIELD TO GATHER MY THOUGHTS. AFTER 1 MIN; I PICKED UP A CANAL THAT HEADED TOWARDS SCOTTSDALE AND WE TURNED DIRECT TO IT. I CONTACTED SCOTTSDALE TWR AND WE WERE CLRED TO PASS DIRECTLY OVER THE ARPT NBOUND. THE HUMAN FACTORS I HAVE IDENTED INCLUDE A LACK OF EXPERIENCE IN THIS ACFT; A LACK OF PLANNING ON MY PART; A LACK OF COM BTWN MYSELF AND THE OTHER PLT; AND THE PRESSURE OF TIME. FROM THIS EXPERIENCE I HAVE LEARNED THAT IT IS IMPORTANT TO TAKE SOME TIME IN PLANNING AND NEVER LET ANYTHING PRESSURE ME INTO HURRYING.