Narrative:

I was on an instrument approach to mod which had an indefinite ceiling with 1/16 mi visibility in fog. When I was on the ILS, I was told by approach that I was left of course. While correcting my position, I reached the middle marker and decision height. I looked, but had no contact with the runway. I was about to do a missed approach when a passenger said that he had the runway. I looked down again and saw the runway. I proceeded to land and landed west/O incident. After landing, I realized that I had landed on the wrong runway which was 18L. I had been cleared to land on runway 28R. Furthermore, I was almost 1/2 of the way down the runway when I touched down. I did, however, have enough runway to stop. After I landed, I was visited by the tower chief, who also advised me that I had landed on the wrong runway. The conversation was friendly, and he said the problem wouldn't go any further. I believe that this situation occurred because of the extremely poor visibility of 1/16 of a mi, and my failure to not make a missed approach. The best way to prevent this from happening is for the pilot to rely only on what he sees and not on a passenger. I also believe in hindsight that an approach in poor visibilities such as this occurrence is not advisable, and shouldn't be tried. Also, if the approach end of the runway hasn't been spotted, a landing shouldn't be attempted, so a T/D 1/2 of the way down the runway won't occur.

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Original NASA ASRS Text

Title: SMT WRONG RWY LNDG IN VERY LIMITED VISIBILITY.

Narrative: I WAS ON AN INSTRUMENT APCH TO MOD WHICH HAD AN INDEFINITE CEILING WITH 1/16 MI VISIBILITY IN FOG. WHEN I WAS ON THE ILS, I WAS TOLD BY APCH THAT I WAS LEFT OF COURSE. WHILE CORRECTING MY POS, I REACHED THE MIDDLE MARKER AND DECISION HEIGHT. I LOOKED, BUT HAD NO CONTACT WITH THE RWY. I WAS ABOUT TO DO A MISSED APCH WHEN A PAX SAID THAT HE HAD THE RWY. I LOOKED DOWN AGAIN AND SAW THE RWY. I PROCEEDED TO LAND AND LANDED W/O INCIDENT. AFTER LNDG, I REALIZED THAT I HAD LANDED ON THE WRONG RWY WHICH WAS 18L. I HAD BEEN CLRED TO LAND ON RWY 28R. FURTHERMORE, I WAS ALMOST 1/2 OF THE WAY DOWN THE RWY WHEN I TOUCHED DOWN. I DID, HOWEVER, HAVE ENOUGH RWY TO STOP. AFTER I LANDED, I WAS VISITED BY THE TWR CHIEF, WHO ALSO ADVISED ME THAT I HAD LANDED ON THE WRONG RWY. THE CONVERSATION WAS FRIENDLY, AND HE SAID THE PROB WOULDN'T GO ANY FURTHER. I BELIEVE THAT THIS SITUATION OCCURRED BECAUSE OF THE EXTREMELY POOR VISIBILITY OF 1/16 OF A MI, AND MY FAILURE TO NOT MAKE A MISSED APCH. THE BEST WAY TO PREVENT THIS FROM HAPPENING IS FOR THE PLT TO RELY ONLY ON WHAT HE SEES AND NOT ON A PAX. I ALSO BELIEVE IN HINDSIGHT THAT AN APCH IN POOR VISIBILITIES SUCH AS THIS OCCURRENCE IS NOT ADVISABLE, AND SHOULDN'T BE TRIED. ALSO, IF THE APCH END OF THE RWY HASN'T BEEN SPOTTED, A LNDG SHOULDN'T BE ATTEMPTED, SO A T/D 1/2 OF THE WAY DOWN THE RWY WON'T OCCUR.

Data retrieved from NASA's ASRS site as of August 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.