Narrative:

Took off from simsbury, ct (4b9) without squawk code. I was flying under the outer ring of bradley charlie airspace over hilly terrain and very bumpy. Looked at chart for a second to check my location and I hit a rising column of air which put me into 'C' airspace -- I immediately lost altitude and exited the area. I should have gotten a 'VFR' squawk code from the bradley facility.

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Original NASA ASRS Text

Title: C172 ACFT OPERATING WITHOUT A FLT PLAN AND XPONDER SQUAWK INADVERTENTLY ENTERED CLASS B AIRSPACE AFTER HITTING AN UPDRAFT.

Narrative: TOOK OFF FROM SIMSBURY, CT (4B9) WITHOUT SQUAWK CODE. I WAS FLYING UNDER THE OUTER RING OF BRADLEY CHARLIE AIRSPACE OVER HILLY TERRAIN AND VERY BUMPY. LOOKED AT CHART FOR A SECOND TO CHK MY LOCATION AND I HIT A RISING COLUMN OF AIR WHICH PUT ME INTO 'C' AIRSPACE -- I IMMEDIATELY LOST ALT AND EXITED THE AREA. I SHOULD HAVE GOTTEN A 'VFR' SQUAWK CODE FROM THE BRADLEY FACILITY.

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.