Flight Purpose and Planning
The flight was intended to conduct the cross-country portion of a student's training for a private pilot certificate. The route crossed a coastal mountain range, with the departure airport under cloud layers and the destination in clear conditions.
Weather Briefings
Prior to departure, the certified flight instructor (CFI) and student received three separate weather briefings. These briefings stated that visual flight rules (VFR) flight was not recommended along the intended route due to mountain obscuration and moderate turbulence.
In-Flight Events
As the flight progressed into mountainous terrain, it encountered clouds that were merging with higher terrain. The CFI decided to turn around. During the 180-degree turn, the CFI reported that halfway through the maneuver, they were struck by a strong downdraft that pushed the aircraft into the ground.
Witness Account
A witness observed the airplane at 150 feet above ground level as it emerged from clouds while executing a left turn. The witness then saw the airplane abruptly descend and impact trees and terrain. The witness also noted strong, gusty wind conditions at the accident site.
Post-Accident Examination and Study
An examination of the engine and airframe revealed no discrepancies. A meteorological study was conducted that substantiated the National Weather Service forecast in effect at the time of the accident.