An instructor and student pilot climbed into mci class B airspace without a clearance.

Attributes
ACN	451247
Time
Date	199909
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mci.airport
State Reference	MO
Altitude	msl bound lower : 4000 msl bound upper : 4800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mci.tower
Operator	general aviation : instructional
Make Model Name	Sierra 24
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : enroute altitude change cruise : descent
Route In Use	enroute other
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 90 flight time total : 7000 flight time type : 250
ASRS Report	451242
Person 2
Affiliation	other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	airspace violation : entry non adherence : far non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	flight crew : returned to assigned airspace
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While departing mkc with a first lesson private student with the student at the controls, we climbed above the 4000 ft lower limit of the mci class B airspace. We were climbing to get to smooth air and I believed we were south of the 4000 ft limit. I was told by the mke tower controller we were in the class B airspace and would be for another 2 mi. We then quickly descended below 4000 ft and continued south. There were no other calls from ATC and no other aircraft in the area.

Original NASA ASRS Text

Title: AN INSTRUCTOR AND STUDENT PLT CLBED INTO MCI CLASS B AIRSPACE WITHOUT A CLRNC.

Narrative: WHILE DEPARTING MKC WITH A FIRST LESSON PVT STUDENT WITH THE STUDENT AT THE CTLS, WE CLBED ABOVE THE 4000 FT LOWER LIMIT OF THE MCI CLASS B AIRSPACE. WE WERE CLBING TO GET TO SMOOTH AIR AND I BELIEVED WE WERE S OF THE 4000 FT LIMIT. I WAS TOLD BY THE MKE TWR CTLR WE WERE IN THE CLASS B AIRSPACE AND WOULD BE FOR ANOTHER 2 MI. WE THEN QUICKLY DSNDED BELOW 4000 FT AND CONTINUED S. THERE WERE NO OTHER CALLS FROM ATC AND NO OTHER ACFT IN THE AREA.

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.