Narrative:

When I left anc on a scheduled flight, the WX at bet was VFR. About 15 mi out I listened to bet ATIS 900 thin broken 200 thin broken and 10 mi visibility. I called bet tower 10 mi out, was told to report right downwind for runway 36 (wind 360 at 8). 2 other aircraft reported 10 mi out right after I did. I was on top of a thin broken layer at which I assumed was the 900 thin broken. I was at 1500 ft tracking inbound to the bet VOR. I could see down through the thin layer and was over the city about 2 northeast of the airport. I gathered from other talk on the radio (tower and other aircraft) that the visibility had dropped to 1 mi and fog. I reported 2 northeast and requested a SVFR clearance. When I got my SVFR clearance, I went downwind and turned base and descended. The WX was moving in from the north and downwind took me south and in VFR conditions I descended. I tracked inbound on the 180 degree radial of the bet VOR. I didn't have time to find the localizer and tune it, everything happened fast and I wasn't prepared for the rapid change in the WX. About the time I decided to reverse course and get out, I saw the VOR and runway off to my left. I knew the VOR was near the north end of the field, so I, on the spur of the moment, without realizing my clearance to land on runway 36, I made a 180 degree left turn and landed on runway 18. When I was down and taxiing clear, I realized my mistake. I don't even know if the tower knew what happened because the cabin attendant was in the cloud.

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Original NASA ASRS Text

Title: WRONG RWY LNDG. UNAUTH LNDG.

Narrative: WHEN I LEFT ANC ON A SCHEDULED FLT, THE WX AT BET WAS VFR. ABOUT 15 MI OUT I LISTENED TO BET ATIS 900 THIN BROKEN 200 THIN BROKEN AND 10 MI VISIBILITY. I CALLED BET TWR 10 MI OUT, WAS TOLD TO RPT R DOWNWIND FOR RWY 36 (WIND 360 AT 8). 2 OTHER ACFT RPTED 10 MI OUT RIGHT AFTER I DID. I WAS ON TOP OF A THIN BROKEN LAYER AT WHICH I ASSUMED WAS THE 900 THIN BROKEN. I WAS AT 1500 FT TRACKING INBOUND TO THE BET VOR. I COULD SEE DOWN THROUGH THE THIN LAYER AND WAS OVER THE CITY ABOUT 2 NE OF THE ARPT. I GATHERED FROM OTHER TALK ON THE RADIO (TWR AND OTHER ACFT) THAT THE VISIBILITY HAD DROPPED TO 1 MI AND FOG. I RPTED 2 NE AND REQUESTED A SVFR CLRNC. WHEN I GOT MY SVFR CLRNC, I WENT DOWNWIND AND TURNED BASE AND DSNDED. THE WX WAS MOVING IN FROM THE N AND DOWNWIND TOOK ME S AND IN VFR CONDITIONS I DSNDED. I TRACKED INBOUND ON THE 180 DEG RADIAL OF THE BET VOR. I DIDN'T HAVE TIME TO FIND THE LOC AND TUNE IT, EVERYTHING HAPPENED FAST AND I WASN'T PREPARED FOR THE RAPID CHANGE IN THE WX. ABOUT THE TIME I DECIDED TO REVERSE COURSE AND GET OUT, I SAW THE VOR AND RWY OFF TO MY L. I KNEW THE VOR WAS NEAR THE N END OF THE FIELD, SO I, ON THE SPUR OF THE MOMENT, WITHOUT REALIZING MY CLRNC TO LAND ON RWY 36, I MADE A 180 DEG L TURN AND LANDED ON RWY 18. WHEN I WAS DOWN AND TAXIING CLR, I REALIZED MY MISTAKE. I DON'T EVEN KNOW IF THE TWR KNEW WHAT HAPPENED BECAUSE THE CAB WAS IN THE CLOUD.

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.