Narrative:

On a VFR flight from dallas (ads) to santa flight engineer (saf), I climbed to 16500 ft MSL. As I approached wichita falls, tx, the cloud tops began to rise, so I continued to climb in order to remain VFR. I was using flight following and squawking the transponder code I was instructed to use. The clouds were broken cumulus but became solid about 20 mi west of wichita falls. The cloud tops gradually got higher and I continued to climb. I turned northerly to locate a hole in order to descend. At the time I believe I was in contact with ZFW. Before I could find a hole in the clouds, flight following or center contacted me and asked my altitude. I responded after which flight following notified me that I was above VFR altitudes. I thought I saw a hole so I responded that I was sorry and would descend immediately. What I thought was a hole was not, but I was able to descend below FL180 shortly thereafter.

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Original NASA ASRS Text

Title: PLT OF A MOONEY M20K ON FLT FOLLOWING CLBS TO AVOID CLOUD BUILDUP AND ENTERS CLASS A AIRSPACE WITHOUT AN IFR FLT PLAN. ATC ALERTS HIM.

Narrative: ON A VFR FLT FROM DALLAS (ADS) TO SANTA FE (SAF), I CLBED TO 16500 FT MSL. AS I APCHED WICHITA FALLS, TX, THE CLOUD TOPS BEGAN TO RISE, SO I CONTINUED TO CLB IN ORDER TO REMAIN VFR. I WAS USING FLT FOLLOWING AND SQUAWKING THE XPONDER CODE I WAS INSTRUCTED TO USE. THE CLOUDS WERE BROKEN CUMULUS BUT BECAME SOLID ABOUT 20 MI W OF WICHITA FALLS. THE CLOUD TOPS GRADUALLY GOT HIGHER AND I CONTINUED TO CLB. I TURNED NORTHERLY TO LOCATE A HOLE IN ORDER TO DSND. AT THE TIME I BELIEVE I WAS IN CONTACT WITH ZFW. BEFORE I COULD FIND A HOLE IN THE CLOUDS, FLT FOLLOWING OR CTR CONTACTED ME AND ASKED MY ALT. I RESPONDED AFTER WHICH FLT FOLLOWING NOTIFIED ME THAT I WAS ABOVE VFR ALTS. I THOUGHT I SAW A HOLE SO I RESPONDED THAT I WAS SORRY AND WOULD DSND IMMEDIATELY. WHAT I THOUGHT WAS A HOLE WAS NOT, BUT I WAS ABLE TO DSND BELOW FL180 SHORTLY THEREAFTER.

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.