Narrative:

Departed sarasota, fl (srq), to stuart, fl (sua), VFR. Was issued clearance to remain clear of class B or class C airspace within 10 mi. I thought the clearance was to avoid tampa class B airspace adjacent (contiguous) to srq class C. Clearance may have been to avoid srq class C airspace. Climbing through 1800 ft, srq tower notified me that I had to remain at or below 1600 ft if contacting tpa approach, or less than or equal to 1200 ft if VFR. I immediately descended to 1600 ft and was handed off to tpa approach control. I do not remember being given a specific altitude restr in the initial clearance. I am used to flying on IFR flight plans under positive control and am not familiar with VFR operations to class B and class C airports. I knew I was clear of the tpa class B airspace, but failed to stay underneath the srq class C floor. I believe I was also somewhat distraction by checking new navigation and DME receivers which had just been installed in aircraft.

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Original NASA ASRS Text

Title: AN APPARENT ACR CAPT, FLYING A PA23-250 OUT OF SRQ, MAY HAVE BLUNDERED INTO TPA CLASS B AIRSPACE.

Narrative: DEPARTED SARASOTA, FL (SRQ), TO STUART, FL (SUA), VFR. WAS ISSUED CLRNC TO REMAIN CLR OF CLASS B OR CLASS C AIRSPACE WITHIN 10 MI. I THOUGHT THE CLRNC WAS TO AVOID TAMPA CLASS B AIRSPACE ADJACENT (CONTIGUOUS) TO SRQ CLASS C. CLRNC MAY HAVE BEEN TO AVOID SRQ CLASS C AIRSPACE. CLBING THROUGH 1800 FT, SRQ TWR NOTIFIED ME THAT I HAD TO REMAIN AT OR BELOW 1600 FT IF CONTACTING TPA APCH, OR LESS THAN OR EQUAL TO 1200 FT IF VFR. I IMMEDIATELY DSNDED TO 1600 FT AND WAS HANDED OFF TO TPA APCH CTL. I DO NOT REMEMBER BEING GIVEN A SPECIFIC ALT RESTR IN THE INITIAL CLRNC. I AM USED TO FLYING ON IFR FLT PLANS UNDER POSITIVE CTL AND AM NOT FAMILIAR WITH VFR OPS TO CLASS B AND CLASS C ARPTS. I KNEW I WAS CLR OF THE TPA CLASS B AIRSPACE, BUT FAILED TO STAY UNDERNEATH THE SRQ CLASS C FLOOR. I BELIEVE I WAS ALSO SOMEWHAT DISTR BY CHKING NEW NAV AND DME RECEIVERS WHICH HAD JUST BEEN INSTALLED IN ACFT.

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.