What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On July 26, 2014, at 1718 CST, a Diamond da 42NG twin star, privacy data omitted, during a left banked descending turn sustained immediate substantial damage upon touchdown, collapsing of the left main gear causing left engine propeller composite blades shredding and the aircraft skidding off runway 18R at Wittman Regional Airport (kosh), WI. Left gear impacted 45 feet to the right of runway 18 r center line, 30 feet to the left of the right edge of the runway. The aircraft was not parallel, but with a slight right heading to the runway at touchdown; this ascertained via videos which document the mishap. The aircraft skidded approximately 300 feet stopping on the grass off the right side of runway 18R. Damage also occurred to left wing, lower empennage and rudder. The three occupants were uninjured. The pilot, a CFI flew the aircraft from the right seat. One passenger, with asel private certificate, sat in the left front seat and the other passenger, asel private certificate, sat in the rear left seat at the time of the accident. The flight, for purposes of attending privacy data omitted, was operating under a FAA waiver / privacy data omitted notice. Eaa privacy data omitted fisk arrival traffic mixed with warbird traffic (from warbird island – vpwar) to rny 18R; in this accident privacy data omitted, the Diamond da 42NG with a touchdown landing configuration speed of 62 knots, followed by privacy data omitted, yakolev YAK-3M with a touchdown speed approx. 103 knots. privacy data omitted Closed steadily on privacy data omitted during downwind, approx. 2000 feet separation before privacy data omitted initiated an ATC directed single descending turn to landing.
Visual meteorological conditions prevailed at the time of the accident.
As the FAA filed it
ON JULY 26, 2014, AT 1718 CST, A DIAMOND DA 42NG TWIN STAR, ^PRIVACY DATA OMITTED^, DURING A LEFT BANKED DESCENDING TURN SUSTAINED IMMEDIATE SUBSTANTIAL DAMAGE UPON TOUCHDOWN, COLLAPSING OF THE LEFT MAIN GEAR CAUSING LEFT ENGINE PROPELLER COMPOSITE BLADES SHREDDING AND THE AIRCRAFT SKIDDING OFF RUNWAY 18R AT WITTMAN REGIONAL AIRPORT (KOSH), WI. LEFT GEAR IMPACTED 45 FEET TO THE RIGHT OF RUNWAY 18 R CENTER LINE, 30 FEET TO THE LEFT OF THE RIGHT EDGE OF THE RUNWAY. THE AIRCRAFT WAS NOT PARALLEL, BUT WITH A SLIGHT RIGHT HEADING TO THE RUNWAY AT TOUCHDOWN; THIS ASCERTAINED VIA VIDEOS WHICH DOCUMENT THE MISHAP. THE AIRCRAFT SKIDDED APPROXIMATELY 300 FEET STOPPING ON THE GRASS OFF THE RIGHT SIDE OF RUNWAY 18R. DAMAGE ALSO OCCURRED TO LEFT WING, LOWER EMPENNAGE AND RUDDER. THE THREE OCCUPANTS WERE UNINJURED. THE PILOT, A CFI FLEW THE AIRCRAFT FROM THE RIGHT SEAT. ONE PASSENGER, WITH ASEL PRIVATE CERTIFICATE, SAT IN THE LEFT FRONT SEAT AND THE OTHER PASSENGER, ASEL PRIVATE CERTIFICATE, SAT IN THE REAR LEFT SEAT AT THE TIME OF THE ACCIDENT. THE FLIGHT, FOR PURPOSES OF ATTENDING ^PRIVACY DATA OMITTED^, WAS OPERATING UNDER A FAA WAIVER / ^PRIVACY DATA OMITTED^ NOTICE. EAA ^PRIVACY DATA OMITTED^ FISK ARRIVAL TRAFFIC MIXED WITH WARBIRD TRAFFIC (FROM WARBIRD ISLAND – VPWAR) TO RNY 18R; IN THIS ACCIDENT ^PRIVACY DATA OMITTED^, THE DIAMOND DA 42NG WITH A TOUCHDOWN LANDING CONFIGURATION SPEED OF 62 KNOTS, FOLLOWED BY ^PRIVACY DATA OMITTED^, YAKOLEV YAK-3M WITH A TOUCHDOWN SPEED APPROX. 103 KNOTS. ^PRIVACY DATA OMITTED^ CLOSED STEADILY ON ^PRIVACY DATA OMITTED^ DURING DOWNWIND, APPROX. 2000 FEET SEPARATION BEFORE ^PRIVACY DATA OMITTED^ INITIATED AN ATC DIRECTED SINGLE DESCENDING TURN TO LANDING.
VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE ACCIDENT.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.