Narrative:

I fly into and out of fcm on a frequent basis, probably 2 times a week, but always IFR. On this day, a hurry-up flight to north dakota with some equipment for a manufacturer. On departure, the WX was cavu but very turbulent with light to moderate turbulence below about 4000 ft. Because I am always IFR, I did not think much about the class B airspace. I departed and had it in my mind to climb to 4500 ft and use this for my cruising altitude, which I did. About 10 mins after departure, it dawned on me that I may have penetrated the TCA even though it would have been the very west edge of it. I got the VFR terminal chart out, and found the floor for the area that I flew through was 4000 ft. I am not sure whether I was in the TCA or not. Complacency may have played a role in this because of the almost 100% IFR flts into the area. The solution would be to pay more attention to airspace when out of one's normal operating environment.

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Original NASA ASRS Text

Title: ATX PLT IN A CESSNA 340 INADVERTENTLY ENTERED CLASS B AIRSPACE DURING A VFR DEP FROM AN ARPT UNDERNEATH THE CLASS B AIRSPACE.

Narrative: I FLY INTO AND OUT OF FCM ON A FREQUENT BASIS, PROBABLY 2 TIMES A WK, BUT ALWAYS IFR. ON THIS DAY, A HURRY-UP FLT TO NORTH DAKOTA WITH SOME EQUIP FOR A MANUFACTURER. ON DEP, THE WX WAS CAVU BUT VERY TURBULENT WITH LIGHT TO MODERATE TURB BELOW ABOUT 4000 FT. BECAUSE I AM ALWAYS IFR, I DID NOT THINK MUCH ABOUT THE CLASS B AIRSPACE. I DEPARTED AND HAD IT IN MY MIND TO CLB TO 4500 FT AND USE THIS FOR MY CRUISING ALT, WHICH I DID. ABOUT 10 MINS AFTER DEP, IT DAWNED ON ME THAT I MAY HAVE PENETRATED THE TCA EVEN THOUGH IT WOULD HAVE BEEN THE VERY W EDGE OF IT. I GOT THE VFR TERMINAL CHART OUT, AND FOUND THE FLOOR FOR THE AREA THAT I FLEW THROUGH WAS 4000 FT. I AM NOT SURE WHETHER I WAS IN THE TCA OR NOT. COMPLACENCY MAY HAVE PLAYED A ROLE IN THIS BECAUSE OF THE ALMOST 100% IFR FLTS INTO THE AREA. THE SOLUTION WOULD BE TO PAY MORE ATTN TO AIRSPACE WHEN OUT OF ONE'S NORMAL OPERATING ENVIRONMENT.

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.