Narrative:

I was practicing VOR navigation while under the hood. (With a qualified safety pilot). I was flying from rockford, il (rfd) to pnt VOR at 3500 ft MSL. Flew outbound 182 degrees radial from pnt to my destination, decatur, il (dec). Upon changing my course to 182 degrees, I descended to 2500 ft MSL (VFR altitude). While doing some xchks with other vors in the area, I drifted right (west) of the 182 degree radial. I discovered my course deviation just after passing the class D airspace of bmi. I am not exactly sure if I entered the class D, but the 182 degree radial runs along the edge of it, so I think I may have entered it by 1/2 to 1 NM. In retrospect, I should have contacted bmi as I turned outbound from pnt.

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Original NASA ASRS Text

Title: CLASS D AIRSPACE ENTERED AT BMI, IL, BY PASSING PLT PRACTICING INST FLT WHEN HE DRIFTED W OF V-313. A SAFETY PLT WAS ONBOARD.

Narrative: I WAS PRACTICING VOR NAV WHILE UNDER THE HOOD. (WITH A QUALIFIED SAFETY PLT). I WAS FLYING FROM ROCKFORD, IL (RFD) TO PNT VOR AT 3500 FT MSL. FLEW OUTBOUND 182 DEGS RADIAL FROM PNT TO MY DEST, DECATUR, IL (DEC). UPON CHANGING MY COURSE TO 182 DEGS, I DSNDED TO 2500 FT MSL (VFR ALT). WHILE DOING SOME XCHKS WITH OTHER VORS IN THE AREA, I DRIFTED R (W) OF THE 182 DEG RADIAL. I DISCOVERED MY COURSE DEV JUST AFTER PASSING THE CLASS D AIRSPACE OF BMI. I AM NOT EXACTLY SURE IF I ENTERED THE CLASS D, BUT THE 182 DEG RADIAL RUNS ALONG THE EDGE OF IT, SO I THINK I MAY HAVE ENTERED IT BY 1/2 TO 1 NM. IN RETROSPECT, I SHOULD HAVE CONTACTED BMI AS I TURNED OUTBOUND FROM PNT.

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.