Narrative:

Returning to cgf on a training flight to mfd. Earlier, had gone to mfd by navigating around and over cleveland's class B. Did not receive the DME on 109.9 (upon which class B limits are based) either going or coming and guessed it may have been OTS. Later realized that I had mistakenly tuned 110.9. Decided to call cle approach for flight following and clearance through class B, and gave my position relative to cxr VOR. Discovered I was well inside class B and 500 ft below the upper limit! The cause was my mistuning the DME and not being more aware of cleveland's class B proximity to mfd, and a strong west wind which brought me into the area quickly. In a word, carelessness.

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Original NASA ASRS Text

Title: WHILE GIVING TRAINING IN A TURBOPROP, A FLT INSTRUCTOR INADVERTENTLY PENETRATED CLASS B AIRSPACE. AFTER-THE-FACT IT WAS DISCOVERED THAT HE HAD MISTUNED A FREQ THAT WOULD HAVE PROVIDED CLASS B BOUNDARY ORIENTATION THROUGH THE USE OF DME. UNAUTH PENETRATION OF CLASS B AIRSPACE.

Narrative: RETURNING TO CGF ON A TRAINING FLT TO MFD. EARLIER, HAD GONE TO MFD BY NAVING AROUND AND OVER CLEVELAND'S CLASS B. DID NOT RECEIVE THE DME ON 109.9 (UPON WHICH CLASS B LIMITS ARE BASED) EITHER GOING OR COMING AND GUESSED IT MAY HAVE BEEN OTS. LATER REALIZED THAT I HAD MISTAKENLY TUNED 110.9. DECIDED TO CALL CLE APCH FOR FLT FOLLOWING AND CLRNC THROUGH CLASS B, AND GAVE MY POS RELATIVE TO CXR VOR. DISCOVERED I WAS WELL INSIDE CLASS B AND 500 FT BELOW THE UPPER LIMIT! THE CAUSE WAS MY MISTUNING THE DME AND NOT BEING MORE AWARE OF CLEVELAND'S CLASS B PROX TO MFD, AND A STRONG W WIND WHICH BROUGHT ME INTO THE AREA QUICKLY. IN A WORD, CARELESSNESS.

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.