Departing pdk, C177 pilot climbs into atl class B without ATC clearance.

Attributes
ACN	603112
Time
Date	200312
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : pdk.vortac
State Reference	GA
Altitude	msl bound lower : 3400 msl bound upper : 3800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pdk.tower
Operator	general aviation : personal
Make Model Name	Cardinal 177/177RG
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure : vfr
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 5 flight time total : 1400 flight time type : 200
ASRS Report	603112
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	airspace violation : entry non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : exited penetrated airspace
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We departed from runway 2L, pdk. We were cleared for a southeast departure (right turn). During climb out, the tower requested a left turn to the southeast departure. At the 180 degree point in the turn, the tower requested that we keep the turn south of the approach ends of runways. I indicated we would continue south to insure that we complied. The class B floor just south of pdk is 6000 ft. Just south of the pdk class D, the floor drops to 3500 ft. I thought we were still under the 6000 ft portion. While we were climbing through 3700 ft, I realized that I was in the 3500 ft zone. I descended to 3400 ft and proceeded east until clear. Our normal procedure is to climb as fast as practical while over the high density area of atlanta. This combined with the instructions from the tower, contributed to my error. I should have had better situational awareness. The principle reason for the climb, of course, is safety. There are no 'outs' if a problem occurs in that area unless you have enough altitude to return.

Original NASA ASRS Text

Title: DEPARTING PDK, C177 PLT CLBS INTO ATL CLASS B WITHOUT ATC CLRNC.

Narrative: WE DEPARTED FROM RWY 2L, PDK. WE WERE CLRED FOR A SE DEP (R TURN). DURING CLBOUT, THE TWR REQUESTED A L TURN TO THE SE DEP. AT THE 180 DEG POINT IN THE TURN, THE TWR REQUESTED THAT WE KEEP THE TURN S OF THE APCH ENDS OF RWYS. I INDICATED WE WOULD CONTINUE S TO INSURE THAT WE COMPLIED. THE CLASS B FLOOR JUST S OF PDK IS 6000 FT. JUST S OF THE PDK CLASS D, THE FLOOR DROPS TO 3500 FT. I THOUGHT WE WERE STILL UNDER THE 6000 FT PORTION. WHILE WE WERE CLBING THROUGH 3700 FT, I REALIZED THAT I WAS IN THE 3500 FT ZONE. I DSNDED TO 3400 FT AND PROCEEDED E UNTIL CLR. OUR NORMAL PROC IS TO CLB AS FAST AS PRACTICAL WHILE OVER THE HIGH DENSITY AREA OF ATLANTA. THIS COMBINED WITH THE INSTRUCTIONS FROM THE TWR, CONTRIBUTED TO MY ERROR. I SHOULD HAVE HAD BETTER SITUATIONAL AWARENESS. THE PRINCIPLE REASON FOR THE CLB, OF COURSE, IS SAFETY. THERE ARE NO 'OUTS' IF A PROB OCCURS IN THAT AREA UNLESS YOU HAVE ENOUGH ALT TO RETURN.

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.