PA24 pilot entered dfw class B airspace without clearance.

Attributes
ACN	512420
Time
Date	200105
Day	Tue
Place
Locale Reference	airport : f46.airport
State Reference	TX
Altitude	msl single value : 4100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : e10.tracon
Operator	general aviation : personal
Make Model Name	PA-24 Comanche
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 5800 flight time type : 2200
ASRS Report	512420
Events
Anomaly	airspace violation : entry altitude deviation : overshoot non adherence : far non adherence : published procedure other anomaly other
Resolutory Action	other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was traveling east away from addison airport, using GPS to define class B boundaries. I leveled off at 3800 ft, 200 ft below the class B floor. After checking other items in the panel and adjusting the engine, I saw the altimeter at 4100 ft, discovered by looking at the altimeter. The addison tower had 1 man working clearance delivery, ground and tower. In order to expedite, I never asked for radar service. Of course, the intrusion shouldn't have happened. Corrective actions: I believe that the class B planners could open a VFR slot from GA airports to the edge of class B airspace boundaries. If I had a corridor 2 mi wide, I could use the GPS to define the class B limits and climb at will in the corridor. It is very often, in various phases of flight, that my airplane climbs or descends in an updraft/downdraft. When an altitude deviation occurs close to sua, this event will happen.

Original NASA ASRS Text

Title: PA24 PLT ENTERED DFW CLASS B AIRSPACE WITHOUT CLRNC.

Narrative: I WAS TRAVELING E AWAY FROM ADDISON ARPT, USING GPS TO DEFINE CLASS B BOUNDARIES. I LEVELED OFF AT 3800 FT, 200 FT BELOW THE CLASS B FLOOR. AFTER CHKING OTHER ITEMS IN THE PANEL AND ADJUSTING THE ENG, I SAW THE ALTIMETER AT 4100 FT, DISCOVERED BY LOOKING AT THE ALTIMETER. THE ADDISON TWR HAD 1 MAN WORKING CLRNC DELIVERY, GND AND TWR. IN ORDER TO EXPEDITE, I NEVER ASKED FOR RADAR SVC. OF COURSE, THE INTRUSION SHOULDN'T HAVE HAPPENED. CORRECTIVE ACTIONS: I BELIEVE THAT THE CLASS B PLANNERS COULD OPEN A VFR SLOT FROM GA ARPTS TO THE EDGE OF CLASS B AIRSPACE BOUNDARIES. IF I HAD A CORRIDOR 2 MI WIDE, I COULD USE THE GPS TO DEFINE THE CLASS B LIMITS AND CLB AT WILL IN THE CORRIDOR. IT IS VERY OFTEN, IN VARIOUS PHASES OF FLT, THAT MY AIRPLANE CLBS OR DSNDS IN AN UPDRAFT/DOWNDRAFT. WHEN AN ALTDEV OCCURS CLOSE TO SUA, THIS EVENT WILL HAPPEN.

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.