Narrative:

I was flying from gpm to tul, VFR, and flying under what I thought to be the outside ring of the dfw class B airspace. As I continued nebound, my DME and terminal chart idented that I was outside what I thought to be the outside ring of the class B airspace. I climbed to approximately 6000 ft MSL, prior to starting an immediate descent to 3500 ft MSL, to ensure I was under the outer ring which is 4000 ft MSL. I didn't open the VFR terminal chart completely to see the outer ring. The outside conditions were hot and the radio consistently had static, presumably from the antennas southeast of gpm.

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Original NASA ASRS Text

Title: A SMALL AIRPLANE PLT VIOLATED DFW CLASS B AIRSPACE.

Narrative: I WAS FLYING FROM GPM TO TUL, VFR, AND FLYING UNDER WHAT I THOUGHT TO BE THE OUTSIDE RING OF THE DFW CLASS B AIRSPACE. AS I CONTINUED NEBOUND, MY DME AND TERMINAL CHART IDENTED THAT I WAS OUTSIDE WHAT I THOUGHT TO BE THE OUTSIDE RING OF THE CLASS B AIRSPACE. I CLBED TO APPROX 6000 FT MSL, PRIOR TO STARTING AN IMMEDIATE DSCNT TO 3500 FT MSL, TO ENSURE I WAS UNDER THE OUTER RING WHICH IS 4000 FT MSL. I DIDN'T OPEN THE VFR TERMINAL CHART COMPLETELY TO SEE THE OUTER RING. THE OUTSIDE CONDITIONS WERE HOT AND THE RADIO CONSISTENTLY HAD STATIC, PRESUMABLY FROM THE ANTENNAS SE OF GPM.

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.