Narrative:

I was a safety pilot providing experience to a qualified tailwheel pilot with 150 hours tailwheel time with experience in same type of biplane we were flying. Previous airwork and pattern work that day went very well. My briefs have always been if a pilot bounces the airplane on landing, we do a go around and not try to 'save' a landing. The pilot executed a go around from a bounce landing earlier in the day successfully. On our last landing, we bounced and started a go around, but the aft settled back onto the runway and proceeded to ground loop and exited the runway. Contributing factors: a front was moving through the area, creating variable gusty xwinds. I believe the airplane encountered windshear. The wind speed picked up quickly during a short time period. Human performance consideration: this was our 4TH flight of the day with 3.5 hours logged and 20+ takeoffs and lndgs. Supplemental information from acn 561552: while on approximately my third flight of the day to practice lndgs and to check out in a waco upf-7 with an instructor, I encountered windshear and hit the ground next to runway 30. The aircraft hit a VASI light and ran into a ditch, flipping over. I had established a slight climb when the aircraft suddenly sank fast, bounced and veered off the runway. The instructor got on the rudder pedals to steer.

Google
 

Original NASA ASRS Text

Title: A WACO UPF-7 ENDS UPSIDE DOWN OFF THE RWY AFTER ENCOUNTERING A WINDSHEAR DURING AN ABORTED LNDG AT OWA, MN.

Narrative: I WAS A SAFETY PLT PROVIDING EXPERIENCE TO A QUALIFIED TAILWHEEL PLT WITH 150 HRS TAILWHEEL TIME WITH EXPERIENCE IN SAME TYPE OF BIPLANE WE WERE FLYING. PREVIOUS AIRWORK AND PATTERN WORK THAT DAY WENT VERY WELL. MY BRIEFS HAVE ALWAYS BEEN IF A PLT BOUNCES THE AIRPLANE ON LNDG, WE DO A GAR AND NOT TRY TO 'SAVE' A LNDG. THE PLT EXECUTED A GAR FROM A BOUNCE LNDG EARLIER IN THE DAY SUCCESSFULLY. ON OUR LAST LNDG, WE BOUNCED AND STARTED A GAR, BUT THE AFT SETTLED BACK ONTO THE RWY AND PROCEEDED TO GND LOOP AND EXITED THE RWY. CONTRIBUTING FACTORS: A FRONT WAS MOVING THROUGH THE AREA, CREATING VARIABLE GUSTY XWINDS. I BELIEVE THE AIRPLANE ENCOUNTERED WINDSHEAR. THE WIND SPD PICKED UP QUICKLY DURING A SHORT TIME PERIOD. HUMAN PERFORMANCE CONSIDERATION: THIS WAS OUR 4TH FLT OF THE DAY WITH 3.5 HRS LOGGED AND 20+ TKOFS AND LNDGS. SUPPLEMENTAL INFO FROM ACN 561552: WHILE ON APPROX MY THIRD FLT OF THE DAY TO PRACTICE LNDGS AND TO CHK OUT IN A WACO UPF-7 WITH AN INSTRUCTOR, I ENCOUNTERED WINDSHEAR AND HIT THE GND NEXT TO RWY 30. THE ACFT HIT A VASI LIGHT AND RAN INTO A DITCH, FLIPPING OVER. I HAD ESTABLISHED A SLIGHT CLB WHEN THE ACFT SUDDENLY SANK FAST, BOUNCED AND VEERED OFF THE RWY. THE INSTRUCTOR GOT ON THE RUDDER PEDALS TO STEER.

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.