Narrative:

I departed pwk with a student, practiced maneuvers nnw of the airport and upon calling the tower to return, I was advised he was not receiving my transponder. This flight was my first as a CFI in a helicopter and in the anticipation, I forgot to turn it on. This was also my second time in this particular helicopter which is equipped with a radio master and I did not double check the transponder. On subsequent flts this has become a double check item.

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Original NASA ASRS Text

Title: HELI PLT DEPARTING PWK ARPT WITH STUDENT, CONDUCTS TRAINING AND WHEN RETURNING, TWR ADVISES XPONDER NOT WORKING. PLT FAILED TO TURN XPONDER ON PRIOR TO DEPARTING CLASS D AIRSPACE. TRAINING CONDUCTED UNDER ORD, MODE C VEIL.

Narrative: I DEPARTED PWK WITH A STUDENT, PRACTICED MANEUVERS NNW OF THE ARPT AND UPON CALLING THE TWR TO RETURN, I WAS ADVISED HE WAS NOT RECEIVING MY XPONDER. THIS FLT WAS MY FIRST AS A CFI IN A HELI AND IN THE ANTICIPATION, I FORGOT TO TURN IT ON. THIS WAS ALSO MY SECOND TIME IN THIS PARTICULAR HELI WHICH IS EQUIPPED WITH A RADIO MASTER AND I DID NOT DOUBLE CHK THE XPONDER. ON SUBSEQUENT FLTS THIS HAS BECOME A DOUBLE CHK ITEM.

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.