Narrative:

Arrived at st paul downtown holman field to pick up 2 passenger for a pleasure flight, returning at dusk. A few hours later, after dark, I left alone with st paul tower clearance for runway 32 departure, right turn to east heading. During this post-takeoff gradual right climbing turn to east, my climb performance was surprisingly good in comparison to the maximum gross weight takeoff earlier. I thus realized it was possible I had exceeded 2300 ft MSL just before leaving the 80/23 class B msp ring. I realized I had climbed to 2700 ft quicker than expected, probably 1-2 NM into the 80/30 ring of class B, leveling off there. Contributing factors to this possible error are my relatively low hours as private pilot, and this being my first class B environment trip. I do have a suggestion, however. Why not put a wedge-shaped 80/30 shelf over st paul holman and s-st paul fleming airports (see drawing). I do not pretend to be an expert, but would this adversely affect turbojet operations? An added benefit would be in arrs: when I was arriving for the first time looking for the airport, I found the 2000 ft MSL under the 80/23 shelf made seeing the field difficult in the dense metropolitan area. In summary, I found this possible error a useful experience and a cheap lesson.

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Original NASA ASRS Text

Title: A PVT SMA PLT CLBS INTO THE LOWER FRINGES OF THE MSP CLASS B DURING A NIGHT OP. SAYS THE ACFT 'CLB PERFORMANCE WAS SURPRISINGLY GOOD.'

Narrative: ARRIVED AT ST PAUL DOWNTOWN HOLMAN FIELD TO PICK UP 2 PAX FOR A PLEASURE FLT, RETURNING AT DUSK. A FEW HRS LATER, AFTER DARK, I LEFT ALONE WITH ST PAUL TWR CLRNC FOR RWY 32 DEP, R TURN TO E HDG. DURING THIS POST-TKOF GRADUAL R CLBING TURN TO E, MY CLB PERFORMANCE WAS SURPRISINGLY GOOD IN COMPARISON TO THE MAX GROSS WT TKOF EARLIER. I THUS REALIZED IT WAS POSSIBLE I HAD EXCEEDED 2300 FT MSL JUST BEFORE LEAVING THE 80/23 CLASS B MSP RING. I REALIZED I HAD CLBED TO 2700 FT QUICKER THAN EXPECTED, PROBABLY 1-2 NM INTO THE 80/30 RING OF CLASS B, LEVELING OFF THERE. CONTRIBUTING FACTORS TO THIS POSSIBLE ERROR ARE MY RELATIVELY LOW HRS AS PVT PLT, AND THIS BEING MY FIRST CLASS B ENVIRONMENT TRIP. I DO HAVE A SUGGESTION, HOWEVER. WHY NOT PUT A WEDGE-SHAPED 80/30 SHELF OVER ST PAUL HOLMAN AND S-ST PAUL FLEMING ARPTS (SEE DRAWING). I DO NOT PRETEND TO BE AN EXPERT, BUT WOULD THIS ADVERSELY AFFECT TURBOJET OPS? AN ADDED BENEFIT WOULD BE IN ARRS: WHEN I WAS ARRIVING FOR THE FIRST TIME LOOKING FOR THE ARPT, I FOUND THE 2000 FT MSL UNDER THE 80/23 SHELF MADE SEEING THE FIELD DIFFICULT IN THE DENSE METRO AREA. IN SUMMARY, I FOUND THIS POSSIBLE ERROR A USEFUL EXPERIENCE AND A CHEAP LESSON.

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.