Narrative:

After shooting a practice approach into oak; I requested continued flight following to pao and thence to wvi. I was given vectors and altitude restrictions to cross the bay to pao. At the time of this occurrence; the controller had requested that I climb to 2500. Shortly afterward; that controller handed me off to the next controller; who promptly notified me that I was in class B airspace without clearance. I promptly descended below 2500 upon notification. No request was made to contact ATC via phone. I am not GPS equipped and admit I was not monitoring position with respect to class B airspace; but assumed ATC was considering overlying class B when instruction was given to climb to 2500. Lesson learned: I will be more careful to monitor my position with respect to airspace; and question ATC instructions that would cause a class B incursion.

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Original NASA ASRS Text

Title: VFR general aviation aircraft departing OAK; requesting VFR flight following from NCT; is informed by ATC that he/she had entered SFO Class B; reporter indicated ATC's altitude assignment was a causal factor.

Narrative: After shooting a practice approach into OAK; I requested continued flight following to PAO and thence to WVI. I was given vectors and altitude restrictions to cross the Bay to PAO. At the time of this occurrence; the controller had requested that I climb to 2500. Shortly afterward; that controller handed me off to the next controller; who promptly notified me that I was in Class B airspace without clearance. I promptly descended below 2500 upon notification. No request was made to contact ATC via phone. I am not GPS equipped and admit I was not monitoring position with respect to Class B airspace; but assumed ATC was considering overlying Class B when instruction was given to climb to 2500. Lesson learned: I will be more careful to monitor my position with respect to airspace; and question ATC instructions that would cause a Class B incursion.

Data retrieved from NASA's ASRS site as of April 2012 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.