Narrative:

I was on downwind abeam the landing numbers to runway 18 at with CFI on board. I announced each leg of the pattern. There were 2 other aircraft in the pattern. With no warning or communications the AA5 suddenly appeared at 1 O'clock position, opposite direction, about 20 degrees left bank in a left turn. I pointed the aircraft out to my instructor who called on the radio to ask the other pilot if he had heard us or the other traffic on CTAF. The AA5 pilot responded that he heard nobody. I continued the approach to a touch-and-go. The AA5 landed after us and taxied into a hangar, therefore, I didn't get his registration. I am an ATC controller at ZME. Olv is too busy to be an uncontrolled airport. In my short tenure flying at olv, I have observed that about 1/2 of the non-student pilots follow no established procedures or traditions. The students follow, or at least try to follow, FAA recommended procedures. Some owner pilots do what ever they want, safety and order notwithstanding. With the very high volume of traffic at olv, a controller is essential. Please complete the already planned tower soon!

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Original NASA ASRS Text

Title: A STUDENT PLT WITH A FLT INSTRUCTOR CAME WITHIN 100 FT OF AN ACFT AT AN UNCTLED FIELD.

Narrative: I WAS ON DOWNWIND ABEAM THE LNDG NUMBERS TO RWY 18 AT WITH CFI ON BOARD. I ANNOUNCED EACH LEG OF THE PATTERN. THERE WERE 2 OTHER ACFT IN THE PATTERN. WITH NO WARNING OR COMS THE AA5 SUDDENLY APPEARED AT 1 O'CLOCK POS, OPPOSITE DIRECTION, ABOUT 20 DEGS L BANK IN A L TURN. I POINTED THE ACFT OUT TO MY INSTRUCTOR WHO CALLED ON THE RADIO TO ASK THE OTHER PLT IF HE HAD HEARD US OR THE OTHER TFC ON CTAF. THE AA5 PLT RESPONDED THAT HE HEARD NOBODY. I CONTINUED THE APCH TO A TOUCH-AND-GO. THE AA5 LANDED AFTER US AND TAXIED INTO A HANGAR, THEREFORE, I DIDN'T GET HIS REGISTRATION. I AM AN ATC CTLR AT ZME. OLV IS TOO BUSY TO BE AN UNCTLED ARPT. IN MY SHORT TENURE FLYING AT OLV, I HAVE OBSERVED THAT ABOUT 1/2 OF THE NON-STUDENT PLTS FOLLOW NO ESTABLISHED PROCS OR TRADITIONS. THE STUDENTS FOLLOW, OR AT LEAST TRY TO FOLLOW, FAA RECOMMENDED PROCS. SOME OWNER PLTS DO WHAT EVER THEY WANT, SAFETY AND ORDER NOTWITHSTANDING. WITH THE VERY HIGH VOLUME OF TFC AT OLV, A CTLR IS ESSENTIAL. PLEASE COMPLETE THE ALREADY PLANNED TWR SOON!

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.