Narrative:

Obtained WX at sgf for IFR flight to ads. As I got closer to pallas on the fingr 3 arrival, WX worsened, and due to worse than expected headwinds, arrived over dallas about 1 hour later than expected. Started approach, some turbulence pulled me off course 2-3 times, but reasonably stable approach. At 1000-1100 ft (decision ht = 800 ft), some kind of shear seemed to hit, since the plane veered to the right of course. Then with correction, veered sharply to the left and above us. As I was beginning to recover from the left of course, now at 900 ft, we spotted the runway to our right. I pondered a missed approach, but decided I had to get back over the runway to execute a missed approach. Consequently, I moved plane sharply to the right, got the runway in full view, probably 150-200 ft below me. I decided to land, despite the altitude and well over the threshold. I may have been below decision ht when I decided to go back to runway and execute missed approach or land. ATIS was not very accurate and a windshear seemed to be present, close to the runway threshold. Missed approach may have been executed earlier. However, on reintercepting course line, runway was seen and I landed safely.

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Original NASA ASRS Text

Title: A C172 PVT PLT LANDS LONG ON RWY 33 AFTER MAKING AN ILS APCH DURING WINDSHEAR CONDITIONS AT ADS, TX.

Narrative: OBTAINED WX AT SGF FOR IFR FLT TO ADS. AS I GOT CLOSER TO PALLAS ON THE FINGR 3 ARR, WX WORSENED, AND DUE TO WORSE THAN EXPECTED HEADWINDS, ARRIVED OVER DALLAS ABOUT 1 HR LATER THAN EXPECTED. STARTED APCH, SOME TURB PULLED ME OFF COURSE 2-3 TIMES, BUT REASONABLY STABLE APCH. AT 1000-1100 FT (DECISION HT = 800 FT), SOME KIND OF SHEAR SEEMED TO HIT, SINCE THE PLANE VEERED TO THE R OF COURSE. THEN WITH CORRECTION, VEERED SHARPLY TO THE L AND ABOVE US. AS I WAS BEGINNING TO RECOVER FROM THE L OF COURSE, NOW AT 900 FT, WE SPOTTED THE RWY TO OUR R. I PONDERED A MISSED APCH, BUT DECIDED I HAD TO GET BACK OVER THE RWY TO EXECUTE A MISSED APCH. CONSEQUENTLY, I MOVED PLANE SHARPLY TO THE R, GOT THE RWY IN FULL VIEW, PROBABLY 150-200 FT BELOW ME. I DECIDED TO LAND, DESPITE THE ALT AND WELL OVER THE THRESHOLD. I MAY HAVE BEEN BELOW DECISION HT WHEN I DECIDED TO GO BACK TO RWY AND EXECUTE MISSED APCH OR LAND. ATIS WAS NOT VERY ACCURATE AND A WINDSHEAR SEEMED TO BE PRESENT, CLOSE TO THE RWY THRESHOLD. MISSED APCH MAY HAVE BEEN EXECUTED EARLIER. HOWEVER, ON REINTERCEPTING COURSE LINE, RWY WAS SEEN AND I LANDED SAFELY.

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.