VFR pilot climbs through floor of class B airspace at den.

Attributes
ACN	437660
Time
Date	199905
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	msl bound lower : 9000 msl bound upper : 9900
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tracon : d01.tracon
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	climbout : initial
Route In Use	departure : vfr
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 12 flight time total : 1750 flight time type : 650
ASRS Report	437660
Events
Anomaly	airspace violation : entry altitude deviation : overshoot non adherence : published procedure non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Problem: intrusion into the den class B airspace occurred while climbing VFR after departure from ftg airport on a southerly course. VOR/DME equipment was tuned to den to monitor position relative to that fix. A den VFR terminal area chart was open for reference. Leveloff was accomplished under the floor of the 10 NM ring. Cruise climb was resumed outside the 10 NM ring. A leveloff was to occur under the 20 NM and 30 NM rings, if climb 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 descent. With less than 3 NM to the lateral boundary, I believe that I would have exited the lateral boundary before descending under the floor. This was my passenger first flight in a light GA aircraft and such a rapid descent would have caused them distress.

Original NASA ASRS Text

Title: 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.

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.