PA60 ON SHORT FINAL TO PWK RWY 34 IS FORCED TO GO AROUND BECAUSE OF A SLOW DEPARTING CPR JET. WHILE CIRCLING E TO RE-ENTER THE RWY 34 PATTERN; THE PA60 PLT HAS AN NMAC WITH A CESSNA THAT HAD DEPARTED RWY 6 TO THE E.

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WE WERE ON AN IFR FLT PLAN FROM PTK TO PWK IN AN AEROSTAR 600. PLT AND 3 PAX; A 600 HR SEL/IFR PLT IN COPLT'S SEAT; MY WIFE; WITH 8 YRS AND 200+ HRS IN GA ACFT (SHE FULLY UNDERSTANDS AVIATION RADIO COMS); AND THE OTHER PLT'S WIFE. AFTER BEING HANDED OFF TO CHICAGO APCH; I CONFIRMED I HAD THE ATIS AND THEN WAS ADVISED TO 'EXPECT THE ILS RWY 16 WITH A CIRCLE TO LAND TO RWY 34.' WE WERE VECTORED TO THE ARPT. ABOUT 9 MI E OF FIELD; I ADVISED APCH I 'HAD PWK IN SIGHT.' I WAS THEN VECTORED ON A 340 DEG HDG WHILE ANOTHER ACFT LANDED. I WAS TURNED BACK TO THE FIELD; AND THEN; AS IS CUSTOMARY AND DESIRED BY ATC; I CANCELED IFR. I WAS GIVEN THE PWK TWR FREQ; ADVISED TO SQUAWK VFR; AND TOLD TO CONTACT PWK TWR. WE WERE APPROX 5 MI NE OF PWK. I CONTACTED PWK TWR; ANNOUNCED I WAS '4.5 E' AND HAD THE ATIS. TWR RESPONDED; 'MAKE R TFC FOR RWY 34 -- CLR TO LAND.' A CPR JET WAS EVIDENTLY WAITING TO DEPART. WE HEARD THE TWR CLR THE JET TO 'TAKE POS AND HOLD ON RWY 34.' I ASSUMED THE JET WOULD BE GIVEN AN IMMEDIATE DEP CLRNC AND THERE WOULD BE PLENTY OF TIME FOR US TO LAND. I 'DIRTIED UP THE ACFT' IN AN ATTEMPT TO SLOW DOWN; LOWERING FLAPS AND GEAR. I AM VERY AWARE; HOWEVER; THAT PWK IS CLOSE TO ORD TO THE S; AND THAT ATC DESIRES THAT YOU STAY AS CLOSE AS POSSIBLE TO PWK IF YOU ARE S OF THE FIELD; SO A '360 DEG TURN' OR 'S-TURNS' AREN'T POSSIBLE. I TURNED FINAL AND THE JET STILL HAD NOT DEPARTED. SEVERAL CALLS TO PWK TWR ADVISING I WAS 'ON SHORT FINAL' WERE NOT ACKNOWLEDGED. THE JET WAS THEN 'CLRED FOR TKOF.' THE JET; AFTER SEVERAL MOMENTS; BEGAN ITS TKOF RUN. WE WERE 1/4 MI FROM TOUCHDOWN. I DID NOT WANT TO FLY OVER THE JET SO I ADVISED TWR I WAS 'GOING AROUND;' BROKE OFF THE APCH; AND TURNED E; RESUMING AN (ABBREVIATED) ENTRY ONTO R TFC. THIS PLACED ME ROUGHLY OVER RWY 6; IN A VERY 'DIRTY' (IE; SLOW) CONFIGN; BUT ACFT CTL WAS NOT AN ISSUE. A C172 OR C182 HAD BEEN CLRED FOR TKOF FROM RWY 6. AFTER 30 SECONDS WITH NO COMS; THE TWR ADVISED ME TO 'KEEP HDG E' AND RESUME R TFC. A PAX THEN YELLED 'TFC' AND I TURNED TO SEE THE CESSNA 200-300 FT TO MY R. I HELD COURSE (I MAY HAVE ALSO CLBED) AND THE CESSNA DSNDED AND PASSED UNDER ME. WE RE-ENTERED THE PATTERN AND LANDED WITHOUT INCIDENT. I HAVE NEVER FELT ANY NEED TO PLACE BLAME IN ON ANYONE IN ANY OF THE RPTS I'VE FILED BEFORE; BUT I MUST; UNFORTUNATELY; CONCLUDE THAT PWK TWR CTLR MADE SEVERAL POTENTIALLY DISASTROUS MISTAKES. I THINK HE MAY HAVE BEEN OVERTAXED; AND; FOR WHATEVER THE REASON; HIS TOTAL ATTN APPEARED TO BE FIXED ON THE JET DEP. I FLY TO PWK OFTEN AND STRONGLY SUSPECT THERE MAY HAVE BEEN THE USUAL 'BICKERING' WITH ORD FOR AN IFR RELEASE FOR THE JET. WHATEVER THE REASON; IT APPEARS THE CTLR SIMPLY FORGOT ABOUT OUR ARR. RADIO CALLS WERE NOT RESPONDED TO (AS THOUGH HE WAS TALKING TO ORD ON A PHONE) AND IT IS OBVIOUS HE JUST FORGOT ABOUT US; FOR WHATEVER THE REASON. WHEN WE DID HAVE TO ABORT THE LNDG; HE AT FIRST FAILED TO RESPOND; AND THEN FAILED TO INFORM ME OF THE DEPARTING CESSNA TFC. THIS ALMOST LED TO A MIDAIR COLLISION. I WAS TRYING TO CTL A VERY 'DIRTY' ACFT IN A STEEP CLB; WHILE TURNING; LOOKING FOR TFC; AND TRYING TO CONTACT THE TWR WITH MY INTENTIONS. I HAD MY HANDS FULL AND THE TWR CTLR WAS ABSOLUTELY NO ASSISTANCE. I HAVE BEEN FLYING TO PWK FOR YRS AND THE ONLY RECOMMENDATION I CAN STRONGLY MAKE IS THAT THE IFR DEP PROCS FOR PWK REALLY MAY NEED TO BE RE-EXAMINED. THE ONLY CONCLUSION I CAN COME TO IS THAT THE PWK TWR CTLR WAS OVERWHELMED WITH THE 'NEGOTIATIONS' TO GET THE JET RELEASED (HE SOUNDED LIKE HE WAS ALONE AND SUBSEQUENT PHONE CALLS TO THE TWR FROM ME WENT UNANSWERED). 20-30 MIN WAITS FOR AN IFR RELEASE AREN'T UNCOMMON; AND EVEN ON A SATURDAY NIGHT; WHICH THIS WAS; O'HARE CAN BE VERY BUSY. BUT A DISASTER ALMOST OCCURRED BECAUSE OF THE CURRENT SYS. I SUSPECT O'HARE CONSTANTLY 'PUSHES' PWK TO GET ACFT READY TO GO AND THEN; ON A MOMENT'S NOTICE; RELEASES THEM FOR 'INSTANT TKOF.' MY GUESS IS THAT THE PWK TWR CTLR WAS BEING 'HARASSED' BY ORD; WHO MAY HAVE DELAYED THE JET RELEASE;AND THEN SUDDENLY WAS TOLD TO GET THE JET READY TO DEPART. HE MAY HAVE FORGOTTEN ABOUT OUR ARR WHILE THIS 'DANCE' WAS GOING ON. THIS WAS HIS ERROR; BUT I CAN UNDERSTAND WHY IT OCCURRED.