SCOTTY BOX R&D LLC: http://registry.faa.gov/N99Y
FAA Flight Standards District Office: FAA Long Beach FSDO-05
NTSB Identification: GAA16CA089
14 CFR Part 91: General Aviation
Accident occurred Friday, December 25, 2015 in Fullerton, CA
Probable Cause Approval Date: 03/14/2016
Aircraft: WACO YMF, registration: N99Y
Injuries: 2 Uninjured.
NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
The pilot of the tailwheel-equipped biplane reported that during the landing roll, a gust of wind lifted the right wing. The airplane started to ground-loop to the right, the left main landing gear collapsed, and left wing impacted the ground. The airplane sustained substantial damage to the bottom left wing.
The pilot reported that there were no pre-impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
The automated weather reporting station located at Fullerton Municipal Airport reported at 1553 Pacific standard time, wind from 300 degrees at 10 knots, wind gust 20 knots, 10 miles visibility, clear sky, temperature 59 degrees Fahrenheit (F), dew point 16 degrees F, and a barometric pressure of 30.01 inches of mercury.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot's failure to maintain directional control during the landing roll.