VFR PLT CLBS THROUGH FLOOR OF CLASS B AIRSPACE AT DEN.

Narrative

PROB: INTRUSION INTO THE DEN CLASS B AIRSPACE OCCURRED WHILE CLBING VFR AFTER DEP FROM FTG ARPT ON A SOUTHERLY COURSE. VOR/DME EQUIP WAS TUNED TO DEN TO MONITOR POS RELATIVE TO THAT FIX. A DEN VFR TERMINAL AREA CHART WAS OPEN FOR REF. LEVELOFF WAS ACCOMPLISHED UNDER THE FLOOR OF THE 10 NM RING. CRUISE CLB WAS RESUMED OUTSIDE THE 10 NM RING. A LEVELOFF WAS TO OCCUR UNDER THE 20 NM AND 30 NM RINGS; IF CLB RATE WAS SUFFICIENT TO REACH THEIR FLOORS PRIOR TO REACHING THEIR LATERAL LIMITS. DISCOVERY: WHILE PASSING THROUGH 9900 FT AT 27 NM FROM DEN; I REALIZED THAT I HAD FAILED TO LEVEL OFF UNDER THE 9000 FT FLOOR OF THE 30 NM RING. CORRECTIVE ACTION: THE FASTEST EXIT OF THE CLASS B AIRSPACE WAS TO CONTINUE ON A SOUTHERLY COURSE. I BRIEFLY CONSIDERED A RAPID DSCNT. WITH LESS THAN 3 NM TO THE LATERAL BOUNDARY; I BELIEVE THAT I WOULD HAVE EXITED THE LATERAL BOUNDARY BEFORE DSNDING UNDER THE FLOOR. THIS WAS MY PAX FIRST FLT IN A LIGHT GA ACFT AND SUCH A RAPID DSCNT WOULD HAVE CAUSED THEM DISTRESS.