Narrative:

I was on a solo VFR cross country flight from cps-spi. No problems were experienced until I began my approach to the airport. When I began to fly over the city, I began experiencing some turbulence. On final approach I was able to stabilize the plane, and touched down on my main left wheel. The winds reported to me on final approach were 270 degrees at 18 KTS. Earlier there had been reports of gusts up to 20 KTS. Problems arose when I tried to lower my main right wheel. When I began to put it down, the wind seemed to pick up my left wing. I took action by using aileron to bring that wing back down. I then ended up taking the plane off the left side of the runway, and on my way out I grazed the guard of the VASI box. No damage was done to the plane. The guard left a dark streak on the box. I believe that when I added the aileron, I also added left rudder. The left rudder is what most likely took me off the runway because when my nosewheel hit, it caused an immediate left turn.

Google
 

Original NASA ASRS Text

Title: A STUDENT PLT RETURNING TO SPI FROM A SOLO XCOUNTRY FLT ENCOUNTERS WIND CONDITIONS BEYOND HIS CAPABILITY ENDING IN A RWY EXCURSION AND A CLOSE ENCOUNTER WITH THE VASI INSTALLATION.

Narrative: I WAS ON A SOLO VFR XCOUNTRY FLT FROM CPS-SPI. NO PROBS WERE EXPERIENCED UNTIL I BEGAN MY APCH TO THE ARPT. WHEN I BEGAN TO FLY OVER THE CITY, I BEGAN EXPERIENCING SOME TURB. ON FINAL APCH I WAS ABLE TO STABILIZE THE PLANE, AND TOUCHED DOWN ON MY MAIN L WHEEL. THE WINDS RPTED TO ME ON FINAL APCH WERE 270 DEGS AT 18 KTS. EARLIER THERE HAD BEEN RPTS OF GUSTS UP TO 20 KTS. PROBS AROSE WHEN I TRIED TO LOWER MY MAIN R WHEEL. WHEN I BEGAN TO PUT IT DOWN, THE WIND SEEMED TO PICK UP MY L WING. I TOOK ACTION BY USING AILERON TO BRING THAT WING BACK DOWN. I THEN ENDED UP TAKING THE PLANE OFF THE L SIDE OF THE RWY, AND ON MY WAY OUT I GRAZED THE GUARD OF THE VASI BOX. NO DAMAGE WAS DONE TO THE PLANE. THE GUARD LEFT A DARK STREAK ON THE BOX. I BELIEVE THAT WHEN I ADDED THE AILERON, I ALSO ADDED L RUDDER. THE L RUDDER IS WHAT MOST LIKELY TOOK ME OFF THE RWY BECAUSE WHEN MY NOSEWHEEL HIT, IT CAUSED AN IMMEDIATE L TURN.

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.