Narrative:

Ord approach had just cleared us for the ILS runway 16 pwk outside cutie intersection at 2700 ft MSL. He had called out traffic to us as a possible conflict at 2500 ft MSL, our 2 O'clock, 2 mi. TCASII also gave us a TA on this target which we acquired visually. After passing this target (also inbound to pwk) I started to descend on GS when RA occurred. I followed RA command to climb which took me to 3200 ft MSL into the class B above the pwk approach corridor. I did see the RA traffic which was a C172 or C182 in cruise at 2500 ft MSL near cutie intersection proceeding east to west. I tried unsuccessfully to do 2 things. First, I wanted to warn the geronimo (our TA target) about the RA target because I thought there was a potential for a collision between them. But the frequency (pwk tower) was totally congested by pattern traffic doing touch-and-goes and the geronimo checking in. Second, I wanted to report the class B incursion as a TCASII RA, but again due to congestion couldn't do it. I also didn't think it was pwk tower's problem. It was ord approach's need to know. I love this TCASII system. The day is coming when you will not be allowed to become airborne in anything without a transponder. For me, keep the head outside the cockpit. For them, dear gods, what is legal to fly through VFR, not talking, and what is safety conscious, are 2 different things. The geronimo should have called approach first, not the tower. The cessna was legally talking to no one in very congested airspace.

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Original NASA ASRS Text

Title: CPR PIC COMPLAINT REGARDING TRANSIT TFC NEAR PWK ARPT AND LACK OF COM PROCS THAT CREATE A SAFETY ISSUE. POTENTIAL CONFLICT ENSUED WITH ONE OF THE ACFT.

Narrative: ORD APCH HAD JUST CLRED US FOR THE ILS RWY 16 PWK OUTSIDE CUTIE INTXN AT 2700 FT MSL. HE HAD CALLED OUT TFC TO US AS A POSSIBLE CONFLICT AT 2500 FT MSL, OUR 2 O'CLOCK, 2 MI. TCASII ALSO GAVE US A TA ON THIS TARGET WHICH WE ACQUIRED VISUALLY. AFTER PASSING THIS TARGET (ALSO INBOUND TO PWK) I STARTED TO DSND ON GS WHEN RA OCCURRED. I FOLLOWED RA COMMAND TO CLB WHICH TOOK ME TO 3200 FT MSL INTO THE CLASS B ABOVE THE PWK APCH CORRIDOR. I DID SEE THE RA TFC WHICH WAS A C172 OR C182 IN CRUISE AT 2500 FT MSL NEAR CUTIE INTXN PROCEEDING E TO W. I TRIED UNSUCCESSFULLY TO DO 2 THINGS. FIRST, I WANTED TO WARN THE GERONIMO (OUR TA TARGET) ABOUT THE RA TARGET BECAUSE I THOUGHT THERE WAS A POTENTIAL FOR A COLLISION BTWN THEM. BUT THE FREQ (PWK TWR) WAS TOTALLY CONGESTED BY PATTERN TFC DOING TOUCH-AND-GOES AND THE GERONIMO CHKING IN. SECOND, I WANTED TO RPT THE CLASS B INCURSION AS A TCASII RA, BUT AGAIN DUE TO CONGESTION COULDN'T DO IT. I ALSO DIDN'T THINK IT WAS PWK TWR'S PROB. IT WAS ORD APCH'S NEED TO KNOW. I LOVE THIS TCASII SYS. THE DAY IS COMING WHEN YOU WILL NOT BE ALLOWED TO BECOME AIRBORNE IN ANYTHING WITHOUT A XPONDER. FOR ME, KEEP THE HEAD OUTSIDE THE COCKPIT. FOR THEM, DEAR GODS, WHAT IS LEGAL TO FLY THROUGH VFR, NOT TALKING, AND WHAT IS SAFETY CONSCIOUS, ARE 2 DIFFERENT THINGS. THE GERONIMO SHOULD HAVE CALLED APCH FIRST, NOT THE TWR. THE CESSNA WAS LEGALLY TALKING TO NO ONE IN VERY CONGESTED AIRSPACE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.