On June 10, 2007, a Cirrus Design Corp. SR22 (registration N171SR) operated by Jens Dalsgaard was involved in an aviation accident near Novato, CA. Investigators recorded the probable cause as: The instructor's failure to maintain directional control during landing. A contributing factor was the wind gusts. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During landing at a destination airport, a student pilot and CFI experienced a wind gust during flare, leading to a bounce and loss of control; the aircraft veered off the runway and came to rest in the grass with collapsed gear.
Approach and Weather
As the airplane approached the destination airport, the two pilots—a student pilot and a certified flight instructor (CFI)—checked the automated weather observation system and noted that the winds were from 210 degrees at 15 knots. The aircraft entered the traffic pattern for runway 31 and prepared to land. Other aircraft landing on the same runway reported over the common traffic advisory frequency that there was "pretty much a direct cross wind" and "wind shear over the hills when turning base to final."
Landing Attempt
The student pilot flew a stable approach with close supervision from the CFI. While flaring, the aircraft was "hit by a massive wind gust that pushed the plane onto the runway and caused a bounce." The CFI took control of the aircraft and "tried to save the landing." The CFI applied full throttle with the intention of going around, but was not able to get the airplane into the air.
Runway Excursion
The aircraft then veered to the right, cleared a ditch that ran parallel to the runway, and came to a stop in the grass with the gear collapsed.