Narrative:

I was acting as flight instructor with a private pilot student. I instructed the student to climb and maintain 1400 ft MSL on departure to remain clear of the overlying class B airspace (1600 ft MSL). As we passed through 1500 ft MSL, I asked the student to take us back down to 1400 ft MSL. At that point in time, ATC called traffic, which I spotted and determined to be no factor. During this time, the student was passing through 1650 ft MSL. I took control of the aircraft and began a rapid descent, at which time tower advised me to remain below 1600 ft. My mode C indicated 1700 ft. I immediately complied. My failure to properly divide my attention between my student, the aircraft, ATC and collision avoidance contributed to my incursion into class B airspace. Other contributing factors included my complacency in dealing with an unfamiliar student with previous flight experience.

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Original NASA ASRS Text

Title: C172 INSTRUCTOR AND STUDENT PLT INADVERTENTLY CLB INTO OVERLYING CLASS B AIRSPACE AT ORL.

Narrative: I WAS ACTING AS FLT INSTRUCTOR WITH A PVT PLT STUDENT. I INSTRUCTED THE STUDENT TO CLB AND MAINTAIN 1400 FT MSL ON DEP TO REMAIN CLR OF THE OVERLYING CLASS B AIRSPACE (1600 FT MSL). AS WE PASSED THROUGH 1500 FT MSL, I ASKED THE STUDENT TO TAKE US BACK DOWN TO 1400 FT MSL. AT THAT POINT IN TIME, ATC CALLED TFC, WHICH I SPOTTED AND DETERMINED TO BE NO FACTOR. DURING THIS TIME, THE STUDENT WAS PASSING THROUGH 1650 FT MSL. I TOOK CTL OF THE ACFT AND BEGAN A RAPID DSCNT, AT WHICH TIME TWR ADVISED ME TO REMAIN BELOW 1600 FT. MY MODE C INDICATED 1700 FT. I IMMEDIATELY COMPLIED. MY FAILURE TO PROPERLY DIVIDE MY ATTN BTWN MY STUDENT, THE ACFT, ATC AND COLLISION AVOIDANCE CONTRIBUTED TO MY INCURSION INTO CLASS B AIRSPACE. OTHER CONTRIBUTING FACTORS INCLUDED MY COMPLACENCY IN DEALING WITH AN UNFAMILIAR STUDENT WITH PREVIOUS FLT EXPERIENCE.

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.