Narrative:

Inbound to cgx I called chicago radar 25 DME 265 degree of dpa. He acknowledged and gave me squawk code and said to stay clear of TCA and report any altitude change to him. At about 5 mi northwest of dupage airport (at 300 MSL) I was told to contact dupage tower and after they (dpa) released me recontact chicago. I contacted dpa tower. Gave my position and waited for them to release me back to chicago. At about 10 DME ord, dpa tower told me to fly a 180 degree heading quickly and recontact chicago. (My course of flight and up until then had been about 90 degree.) I contacted chicago he said he had told me to remain clear of TCA (at this point I was 3000 MSL and floor of TCA was 1900) and told me to get below 1900 MSL which I did. He then handed me off to midway tower and I had no more contact with chicago. In retrospect my thoughts were that I shouldn't change altitude unless in contact with chicago radar as he said to report any altitude change to him. Next time I go to chicago I will enter from the southwest to avoid going to a tower frequency during altitude changes to avoid the TCA.

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Original NASA ASRS Text

Title: UNAUTHORIZED PENETRATION OF AIRSPACE. PROX OF TCA.

Narrative: INBOUND TO CGX I CALLED CHICAGO RADAR 25 DME 265 DEG OF DPA. HE ACKNOWLEDGED AND GAVE ME SQUAWK CODE AND SAID TO STAY CLR OF TCA AND RPT ANY ALT CHANGE TO HIM. AT ABOUT 5 MI NW OF DUPAGE ARPT (AT 300 MSL) I WAS TOLD TO CONTACT DUPAGE TWR AND AFTER THEY (DPA) RELEASED ME RECONTACT CHICAGO. I CONTACTED DPA TWR. GAVE MY POS AND WAITED FOR THEM TO RELEASE ME BACK TO CHICAGO. AT ABOUT 10 DME ORD, DPA TWR TOLD ME TO FLY A 180 DEG HDG QUICKLY AND RECONTACT CHICAGO. (MY COURSE OF FLT AND UP UNTIL THEN HAD BEEN ABOUT 90 DEG.) I CONTACTED CHICAGO HE SAID HE HAD TOLD ME TO REMAIN CLR OF TCA (AT THIS POINT I WAS 3000 MSL AND FLOOR OF TCA WAS 1900) AND TOLD ME TO GET BELOW 1900 MSL WHICH I DID. HE THEN HANDED ME OFF TO MIDWAY TWR AND I HAD NO MORE CONTACT WITH CHICAGO. IN RETROSPECT MY THOUGHTS WERE THAT I SHOULDN'T CHANGE ALT UNLESS IN CONTACT WITH CHICAGO RADAR AS HE SAID TO RPT ANY ALT CHANGE TO HIM. NEXT TIME I GO TO CHICAGO I WILL ENTER FROM THE SW TO AVOID GOING TO A TWR FREQ DURING ALT CHANGES TO AVOID THE TCA.

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.