Narrative:

Our clearance was for a visual approach to atl runway 27. We were advised to contact tower at the marker. As captain, I was flying and heard the first officer make several xmissions over the radio for landing clearance. Having completed before landing checklist, I asked the first officer to verify our landing clearance which had not been given. I heard no response from either the first officer or so, except a brief radio transmission about wrong frequency or wrong agency. At approximately 200 ft AGL, I initiated a go around, called for missed approach, began complying and asked the first officer to ask tower for further missed instructions. We complied, made another approach and landed. During taxi in I believe ground asked us something to the effect we were given clearance to land, however we were off frequency and the first officer stated we were not channelized. I waited till we were at the gate, and being on the wrong frequency when we switched over was his reply. I felt our gate discussion and debriefing to be satisfactory as to any corrective action. Whatever the first officer did to get on the wrong frequency was inadvertent and unintentional. This go around decision was a good example of when in doubt, make the decision in favor of safety.

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Original NASA ASRS Text

Title: CAPT OF AN LGT ACR ACFT MAKES MISSED APCH GAR DURING A VISUAL APCH BECAUSE HE DID NOT KNOW IF THE TWR HAD GIVEN LNDG AUTHORIZATION.

Narrative: OUR CLRNC WAS FOR A VISUAL APCH TO ATL RWY 27. WE WERE ADVISED TO CONTACT TWR AT THE MARKER. AS CAPT, I WAS FLYING AND HEARD THE FO MAKE SEVERAL XMISSIONS OVER THE RADIO FOR LNDG CLRNC. HAVING COMPLETED BEFORE LNDG CHKLIST, I ASKED THE FO TO VERIFY OUR LNDG CLRNC WHICH HAD NOT BEEN GIVEN. I HEARD NO RESPONSE FROM EITHER THE FO OR SO, EXCEPT A BRIEF RADIO XMISSION ABOUT WRONG FREQ OR WRONG AGENCY. AT APPROX 200 FT AGL, I INITIATED A GAR, CALLED FOR MISSED APCH, BEGAN COMPLYING AND ASKED THE FO TO ASK TWR FOR FURTHER MISSED INSTRUCTIONS. WE COMPLIED, MADE ANOTHER APCH AND LANDED. DURING TAXI IN I BELIEVE GND ASKED US SOMETHING TO THE EFFECT WE WERE GIVEN CLRNC TO LAND, HOWEVER WE WERE OFF FREQ AND THE FO STATED WE WERE NOT CHANNELIZED. I WAITED TILL WE WERE AT THE GATE, AND BEING ON THE WRONG FREQ WHEN WE SWITCHED OVER WAS HIS REPLY. I FELT OUR GATE DISCUSSION AND DEBRIEFING TO BE SATISFACTORY AS TO ANY CORRECTIVE ACTION. WHATEVER THE FO DID TO GET ON THE WRONG FREQ WAS INADVERTENT AND UNINTENTIONAL. THIS GAR DECISION WAS A GOOD EXAMPLE OF WHEN IN DOUBT, MAKE THE DECISION IN FAVOR OF SAFETY.

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.