Narrative:

During the landing, just after touchdown, the left wing came up quickly. The airplane veered about 30 degrees right and left the runway on the right side. By this time the airplane was wings level (mains on, tail down) and rolling to a stop in the grass off the runway. Felt an impact but had seen nothing. The T6 is very blind from the back, where I fly. I shut the engine down after stopping the airplane, deplaned the front seat passenger and upon inspection, found I had smashed flat a VASI. Light damage to the T6, 1 VASI destroyed. According to the regulations, the incident was non-reportable (light damage to airplane -- the T6 is tough and all damage was less than $25000, VASI and plane). No one hurt. At the time of incident, wind was down the runway but at time of landing a very strong, gusty crosswind started. 4 planes landed after me and all barely made it. My bad luck. I suppose I should have been more vigilant of the changing wind direction. The airplane is again flying. The VASI is still flat.

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Original NASA ASRS Text

Title: A T6 PLT LOSES CTL DURING A LNDG IN A XWIND CONDITION AND WIPES OUT A SET OF VASI LIGHTS.

Narrative: DURING THE LNDG, JUST AFTER TOUCHDOWN, THE L WING CAME UP QUICKLY. THE AIRPLANE VEERED ABOUT 30 DEGS R AND LEFT THE RWY ON THE R SIDE. BY THIS TIME THE AIRPLANE WAS WINGS LEVEL (MAINS ON, TAIL DOWN) AND ROLLING TO A STOP IN THE GRASS OFF THE RWY. FELT AN IMPACT BUT HAD SEEN NOTHING. THE T6 IS VERY BLIND FROM THE BACK, WHERE I FLY. I SHUT THE ENG DOWN AFTER STOPPING THE AIRPLANE, DEPLANED THE FRONT SEAT PAX AND UPON INSPECTION, FOUND I HAD SMASHED FLAT A VASI. LIGHT DAMAGE TO THE T6, 1 VASI DESTROYED. ACCORDING TO THE REGS, THE INCIDENT WAS NON-REPORTABLE (LIGHT DAMAGE TO AIRPLANE -- THE T6 IS TOUGH AND ALL DAMAGE WAS LESS THAN $25000, VASI AND PLANE). NO ONE HURT. AT THE TIME OF INCIDENT, WIND WAS DOWN THE RWY BUT AT TIME OF LNDG A VERY STRONG, GUSTY XWIND STARTED. 4 PLANES LANDED AFTER ME AND ALL BARELY MADE IT. MY BAD LUCK. I SUPPOSE I SHOULD HAVE BEEN MORE VIGILANT OF THE CHANGING WIND DIRECTION. THE AIRPLANE IS AGAIN FLYING. THE VASI IS STILL FLAT.

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.