Narrative:

I was flying from oak to Q99, I misunderstood when ATC wanted me to transition along the foothills, so I held my position then turned toward final approach course. After many calls I left the airspace and never crossed the final course. I am working on ATC during peak hours to prevent this from occurring again.

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Original NASA ASRS Text

Title: PVT PLT OF A SMA HELI FAILED TO COMPLY WITH ATC INSTRUCTIONS DURING TRANSITIONING OF CLASS D AIRSPACE.

Narrative: I WAS FLYING FROM OAK TO Q99, I MISUNDERSTOOD WHEN ATC WANTED ME TO TRANSITION ALONG THE FOOTHILLS, SO I HELD MY POS THEN TURNED TOWARD FINAL APCH COURSE. AFTER MANY CALLS I LEFT THE AIRSPACE AND NEVER CROSSED THE FINAL COURSE. I AM WORKING ON ATC DURING PEAK HRS TO PREVENT THIS FROM OCCURRING AGAIN.

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.