Narrative:

I was instructing primary student in traffic pattern operations, takeoff and lndgs at champaign willard airport. We had made several circuits in the pattern, receiving landing clearance usually on downwind leg. On the approach of the incident, I thought we had clearance to land, but got involved with talking to the student. After the touch and go, I realized there was no radio traffic, looked down and turned up the volume control to hear a flurry of radio traffic concerning a 'NORDO' aircraft, which I realized was me. I called tower to report on and was told I had caused another aircraft to go around as well as landing without clearance. The student must have turned the volume control down with his throttle hand and I failed to notice. To prevent this in future operations in the archer 3, I will insist upon using #1 radio and more closely monitor controller traffic and radios. Factors involved: physical arrangement, throttle level close to volume control at full power position. Instructor too involved with student actions. Situational awareness, failing to realize no landing clearance.

Google
 

Original NASA ASRS Text

Title: INSTRUCTOR PLT GIVEN DUAL TOUCH AND GO LNDGS TO A PRIMARY STUDENT, LANDED AND DID TOUCH AND GO WITHOUT CLRNC CAUSING TWR CTLR TO SEND ANOTHER ACFT AROUND.

Narrative: I WAS INSTRUCTING PRIMARY STUDENT IN TFC PATTERN OPS, TKOF AND LNDGS AT CHAMPAIGN WILLARD ARPT. WE HAD MADE SEVERAL CIRCUITS IN THE PATTERN, RECEIVING LNDG CLRNC USUALLY ON DOWNWIND LEG. ON THE APCH OF THE INCIDENT, I THOUGHT WE HAD CLRNC TO LAND, BUT GOT INVOLVED WITH TALKING TO THE STUDENT. AFTER THE TOUCH AND GO, I REALIZED THERE WAS NO RADIO TFC, LOOKED DOWN AND TURNED UP THE VOLUME CTL TO HEAR A FLURRY OF RADIO TFC CONCERNING A 'NORDO' ACFT, WHICH I REALIZED WAS ME. I CALLED TWR TO RPT ON AND WAS TOLD I HAD CAUSED ANOTHER ACFT TO GAR AS WELL AS LNDG WITHOUT CLRNC. THE STUDENT MUST HAVE TURNED THE VOLUME CTL DOWN WITH HIS THROTTLE HAND AND I FAILED TO NOTICE. TO PREVENT THIS IN FUTURE OPS IN THE ARCHER 3, I WILL INSIST UPON USING #1 RADIO AND MORE CLOSELY MONITOR CTLR TFC AND RADIOS. FACTORS INVOLVED: PHYSICAL ARRANGEMENT, THROTTLE LEVEL CLOSE TO VOLUME CTL AT FULL PWR POS. INSTRUCTOR TOO INVOLVED WITH STUDENT ACTIONS. SITUATIONAL AWARENESS, FAILING TO REALIZE NO LNDG CLRNC.

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.