Speed Flyer North Side Injury

A speed flyer took a low deflation on the North Side and suffered a head injury. Contributing factors were that it was 3:00 in the afternoon on a strong, north day. The pilot flew behind the parking area where he was susceptible to the effects of rotor turbulence from the houses. Items of note: the pilots trim tabs were set on fast which invites deflation and makes recovery take longer. Also, this particular location and condition has contributed to two notable speed flyer crashes over the last 4-5 years.