A POTENTIAL CONFLICT ENSUES NEAR THE TFC PATTERN AT AHN; GA. STUDENT PLT RPTED '3 MI W' AT A 2 MI POINT. DEP TFC CONFLICT.

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WE TOOK OFF FROM L2U INBOUND FOR AHN. AT POS #1; +/-5 MI OUT; CALLED AHN FOR LNDG. INSTRUCTION FROM AHN: CALL 3 MI W OF AHN. AT POS #2 STUDENT SAID '3 MI' TO AHN TWR. THE REAL POS WAS MORE LIKE 2 MI OUT. AT POS #3 THE TWR INSTRUCTED 'ENTER L DOWNWIND RWY 27.' STUDENT PROCEEDED WITH TURN INTO L XWIND! APPARENTLY; TWR HAD AUTH AIRPLANE ON TKOF FOR AN EARLY R TURNOUT; WHICH RESULTED IN A NEAR MISS. AT POS #4 I TOOK AIRPLANE FROM STUDENT PLT AND INITIATED EVASIVE ACTION TO L (SEEMED DIRECTION IN WHICH GREATEST SEPARATION IN SHORTEST TIME COULD BE OBTAINED). WHILE THIS WAS HAPPENING; TWR SPOTTED US (I BELIEVE) FOR THE FIRST TIME AND INSTRUCTED US FOR THE FIRST TIME AND INSTRUCTED US FOR A R DOWNWIND. I GAVE BACK PLANE TO STUDENT AFTER ASKING IF HE UNDERSTOOD. STUDENT SAID YES; AND PROCEEDED TO POS #5 IN SKETCH (I THOUGHT HE FLEW TO POS #5 FOR WIDER DOWNWIND). AT POS #6 HE TURNED ONTO FINAL RWY 20; AIRPLANE ON FINAL TO RWY 27 (B IN SKETCH). HE NOTICES THIS AND ABORTS LNDG AT POS #7. I AM FLYING THE PLANE IN ATTEMPT TO RE-ENTER DOWNWIND RWY 27 BUT AHN TWR REACTS RIGHT AWAY WITH INSTRUCTION TO LAND ON RWY 20. AT POS #8 WE ARE LNDG ON RWY 20 AS INSTRUCTED. TWR ASKING FOR MEETING. VISITED TWR MGR. NO FURTHER ACTION AFTER TALK.