Narrative:

Student was doing the localizer back course 23 approach. He got confused and was having trouble. I took over the plane. At that time tower started reading our clearance. I responded back to the radio call. At this time we were VOR inbound, which they told us to report. My student started to do his T's and hit the VFR button instead of the clock button. Tower then came on and asked why we were on 1200. I explained to them what just happened. They didn't understand what I meant by VFR button. So, I started to explain to them, when my student set up to land and landed. I then noticed that we landed without clearance. Tower didn't say anything, but I know that we were in the wrong.

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Original NASA ASRS Text

Title: SMA ACFT ON TRAINING FLT. STUDENT INADVERTENTLY HIT XPONDER BUTTON INSTEAD OF THE CLOCK BUTTON AND TWR QUESTIONED WHY THEY WERE SQUAWKING VFR CODE. RPTR INSTRUCTOR WAS TRYING TO EXPLAIN, BUT THE STUDENT HAD LANDED WITHOUT CLRNC.

Narrative: STUDENT WAS DOING THE LOC BACK COURSE 23 APCH. HE GOT CONFUSED AND WAS HAVING TROUBLE. I TOOK OVER THE PLANE. AT THAT TIME TWR STARTED READING OUR CLRNC. I RESPONDED BACK TO THE RADIO CALL. AT THIS TIME WE WERE VOR INBOUND, WHICH THEY TOLD US TO RPT. MY STUDENT STARTED TO DO HIS T'S AND HIT THE VFR BUTTON INSTEAD OF THE CLOCK BUTTON. TWR THEN CAME ON AND ASKED WHY WE WERE ON 1200. I EXPLAINED TO THEM WHAT JUST HAPPENED. THEY DIDN'T UNDERSTAND WHAT I MEANT BY VFR BUTTON. SO, I STARTED TO EXPLAIN TO THEM, WHEN MY STUDENT SET UP TO LAND AND LANDED. I THEN NOTICED THAT WE LANDED WITHOUT CLRNC. TWR DIDN'T SAY ANYTHING, BUT I KNOW THAT WE WERE IN THE WRONG.

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.