C210 aircraft climbing more rapidly than reporter pilot was accustomed to, probably penetrated class...

Attributes
ACN	365930
Time
Date	199704
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : apa
State Reference	CO
Altitude	msl bound lower : 9600 msl bound upper : 9600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : den tower : apa
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C, 210D
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 15 flight time total : 3000 flight time type : 200
ASRS Report	365930
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	inflight encounter : weather non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : exited penetrated airspace
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After departure from runway 35R from apa, I turned right to 120 degree heading and established a cruise climb (120 KTS) to 11500 ft MSL. A few mins after leaving apa class D airspace, I noticed the airplane, cessna 210, was climbing between 1000- 1500 FPM. Apa tower called me and asked my altitude and I replied '9600 ft.' at first, I thought of possible traffic conflicts so I concentrated my scan for traffic, then I got concerned about the overlying class B airspace. I had a denver terminal and looked it over and I don't believe I entered class B airspace, but I would have been close. I have made this flight (2k3 direct apa direct 2k3) several times in this same aircraft and normally the rate of climb at cruise/climb settings will only produce 400-500 FPM climb. With 1500 FPM climb rate my guess is upslope winds, or intense thermal activity in the area southeast of apa airport.

Original NASA ASRS Text

Title: C210 ACFT CLBING MORE RAPIDLY THAN RPTR PLT WAS ACCUSTOMED TO, PROBABLY PENETRATED CLASS B AIRSPACE.

Narrative: AFTER DEP FROM RWY 35R FROM APA, I TURNED R TO 120 DEG HDG AND ESTABLISHED A CRUISE CLB (120 KTS) TO 11500 FT MSL. A FEW MINS AFTER LEAVING APA CLASS D AIRSPACE, I NOTICED THE AIRPLANE, CESSNA 210, WAS CLBING BTWN 1000- 1500 FPM. APA TWR CALLED ME AND ASKED MY ALT AND I REPLIED '9600 FT.' AT FIRST, I THOUGHT OF POSSIBLE TFC CONFLICTS SO I CONCENTRATED MY SCAN FOR TFC, THEN I GOT CONCERNED ABOUT THE OVERLYING CLASS B AIRSPACE. I HAD A DENVER TERMINAL AND LOOKED IT OVER AND I DON'T BELIEVE I ENTERED CLASS B AIRSPACE, BUT I WOULD HAVE BEEN CLOSE. I HAVE MADE THIS FLT (2K3 DIRECT APA DIRECT 2K3) SEVERAL TIMES IN THIS SAME ACFT AND NORMALLY THE RATE OF CLB AT CRUISE/CLB SETTINGS WILL ONLY PRODUCE 400-500 FPM CLB. WITH 1500 FPM CLB RATE MY GUESS IS UPSLOPE WINDS, OR INTENSE THERMAL ACTIVITY IN THE AREA SE OF APA ARPT.

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.

C210 aircraft climbing more rapidly than reporter pilot was accustomed to, probably penetrated class B airspace.