Narrative:

I was practicing takeoffs and lndgs at quad city international airport in a cirrus SR20. During factory training and flight home, all system worked fine and the radios were operating normally. This was the second time I have flown since it was brought back and during my first flight on the evening of 07/wed/02, I experienced radio problems. I returned the next morning to check the radios and identify the problem, if I could. The radios worked fine on the ground but were cutting off and on during climb out until the power was reduced for landing. With full power on takeoff and climb out, there was too much static to the point I couldn't hear the tower. After 2 tries, I decided to quit and told the tower that I was going to make a full stop landing. On downwind I lost all radio contact with the tower and as I was making my turn from base to final, noticed another aircraft above and slightly in front of me that appeared to make a go around. I made a full stop landing, taxied to the ramp. The pilot of the other aircraft confronted me on the ramp and told me that I operated in an unsafe manner and was going to report to the FAA. I told him that I was having radio problem and the tower was fully aware of it and that I didn't see him until I turned final. My explanation didn't seem to satisfy him and he was irate. I called the tower supervisor and told what had happened and apologized for the incident. I am having the radios checked before my next flight, whenever that might be.

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Original NASA ASRS Text

Title: GA ACFT HAS NMAC DURING FINAL APCH.

Narrative: I WAS PRACTICING TKOFS AND LNDGS AT QUAD CITY INTL ARPT IN A CIRRUS SR20. DURING FACTORY TRAINING AND FLT HOME, ALL SYS WORKED FINE AND THE RADIOS WERE OPERATING NORMALLY. THIS WAS THE SECOND TIME I HAVE FLOWN SINCE IT WAS BROUGHT BACK AND DURING MY FIRST FLT ON THE EVENING OF 07/WED/02, I EXPERIENCED RADIO PROBS. I RETURNED THE NEXT MORNING TO CHK THE RADIOS AND IDENT THE PROB, IF I COULD. THE RADIOS WORKED FINE ON THE GND BUT WERE CUTTING OFF AND ON DURING CLBOUT UNTIL THE PWR WAS REDUCED FOR LNDG. WITH FULL PWR ON TKOF AND CLBOUT, THERE WAS TOO MUCH STATIC TO THE POINT I COULDN'T HEAR THE TWR. AFTER 2 TRIES, I DECIDED TO QUIT AND TOLD THE TWR THAT I WAS GOING TO MAKE A FULL STOP LNDG. ON DOWNWIND I LOST ALL RADIO CONTACT WITH THE TWR AND AS I WAS MAKING MY TURN FROM BASE TO FINAL, NOTICED ANOTHER ACFT ABOVE AND SLIGHTLY IN FRONT OF ME THAT APPEARED TO MAKE A GAR. I MADE A FULL STOP LNDG, TAXIED TO THE RAMP. THE PLT OF THE OTHER ACFT CONFRONTED ME ON THE RAMP AND TOLD ME THAT I OPERATED IN AN UNSAFE MANNER AND WAS GOING TO RPT TO THE FAA. I TOLD HIM THAT I WAS HAVING RADIO PROB AND THE TWR WAS FULLY AWARE OF IT AND THAT I DIDN'T SEE HIM UNTIL I TURNED FINAL. MY EXPLANATION DIDN'T SEEM TO SATISFY HIM AND HE WAS IRATE. I CALLED THE TWR SUPVR AND TOLD WHAT HAD HAPPENED AND APOLOGIZED FOR THE INCIDENT. I AM HAVING THE RADIOS CHKED BEFORE MY NEXT FLT, WHENEVER THAT MIGHT BE.

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.