What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
A pitts S2-C airplane was damaged following a loss of control during an instructional flight. Substanial damage was confirmed by airworthiness inspector. The flight instructor reported that he and the private pilot were practicing touch-and-go landings. On the third touch-and-go landing the airplane drifted to the right side of the runway just prior to touching down. The flight instructor took over the controls and executed a go-around. During the go-around the flight instructor felt a slight buffet and noticed some damage to the lower right wingtip. After landing, the flight instructor realized that the airplane's right wing struck a runway identifier sign. A 12-inch-long section of the outboard aft spar separated from the wing. The outboard end of the aileron to the outboard hinge was bent and distorted rearward from its original position.
As the FAA filed it
A PITTS S2-C AIRPLANE WAS DAMAGED FOLLOWING A LOSS OF CONTROL DURING AN INSTRUCTIONAL FLIGHT. SUBSTANIAL DAMAGE WAS CONFIRMED BY AIRWORTHINESS INSPECTOR. THE FLIGHT INSTRUCTOR REPORTED THAT HE AND THE PRIVATE PILOT WERE PRACTICING TOUCH-AND-GO LANDINGS. ON THE THIRD TOUCH-AND-GO LANDING THE AIRPLANE DRIFTED TO THE RIGHT SIDE OF THE RUNWAY JUST PRIOR TO TOUCHING DOWN. THE FLIGHT INSTRUCTOR TOOK OVER THE CONTROLS AND EXECUTED A GO-AROUND. DURING THE GO-AROUND THE FLIGHT INSTRUCTOR FELT A SLIGHT BUFFET AND NOTICED SOME DAMAGE TO THE LOWER RIGHT WINGTIP. AFTER LANDING, THE FLIGHT INSTRUCTOR REALIZED THAT THE AIRPLANE'S RIGHT WING STRUCK A RUNWAY IDENTIFIER SIGN. A 12-INCH-LONG SECTION OF THE OUTBOARD AFT SPAR SEPARATED FROM THE WING. THE OUTBOARD END OF THE AILERON TO THE OUTBOARD HINGE WAS BENT AND DISTORTED REARWARD FROM ITS ORIGINAL POSITION.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.