PA28 inadvertently incurs class B airspace at ord.

Attributes
ACN	437790
Time
Date	199905
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 1900 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	approach : visual arrival : vfr
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 20 flight time total : 500 flight time type : 50
ASRS Report	437790
Events
Anomaly	airspace violation : entry altitude deviation : overshoot inflight encounter : turbulence inflight encounter : weather non adherence : published procedure non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited penetrated airspace flight crew : returned to assigned airspace
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While approaching schaumburg regional airport (06C), I accidentally violated ord class B airspace. The base of the ord class B airspace over 06C is 1900 ft MSL. While flying toward 06C at 1850 ft MSL, I momentarily and inadvertently reached an altitude of 2000 ft MSL, thus violating the base of ord's class B airspace. Turbulent conditions contributed to the inadvertent climb. As soon as I realized I had reached 2000 ft MSL, I immediately descended back to 1800 ft. The class B incursion lasted no more than a few seconds. I am very familiar with the ord class B airspace, as 06C is my home airport. Momentary inattn to my altimeter combined with turbulent conditions caused this accidental airspace incursion.

Original NASA ASRS Text

Title: PA28 INADVERTENTLY INCURS CLASS B AIRSPACE AT ORD.

Narrative: WHILE APCHING SCHAUMBURG REGIONAL ARPT (06C), I ACCIDENTALLY VIOLATED ORD CLASS B AIRSPACE. THE BASE OF THE ORD CLASS B AIRSPACE OVER 06C IS 1900 FT MSL. WHILE FLYING TOWARD 06C AT 1850 FT MSL, I MOMENTARILY AND INADVERTENTLY REACHED AN ALT OF 2000 FT MSL, THUS VIOLATING THE BASE OF ORD'S CLASS B AIRSPACE. TURBULENT CONDITIONS CONTRIBUTED TO THE INADVERTENT CLB. AS SOON AS I REALIZED I HAD REACHED 2000 FT MSL, I IMMEDIATELY DSNDED BACK TO 1800 FT. THE CLASS B INCURSION LASTED NO MORE THAN A FEW SECONDS. I AM VERY FAMILIAR WITH THE ORD CLASS B AIRSPACE, AS 06C IS MY HOME ARPT. MOMENTARY INATTN TO MY ALTIMETER COMBINED WITH TURBULENT CONDITIONS CAUSED THIS ACCIDENTAL AIRSPACE INCURSION.

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.