Briegleb BG-12B?

It is located at Eufaula, OK (F08).

Most read like pilot/builder error. Over speed, Over g and poor construction on a push rod seemed to be the primary fatals. EAB powered aircraft suffer from similar issues so it doesn't surprise me to see homebuilt gliders with similar reports. I knew a guy who bought it in a Titan Tornado. It didn't make the aircraft a bad design or him a bad pilot. Just a bad decision on that day.

It is in Eufaula, OK (F08).

"Investigate and draw your own conclusions."

Looks pretty conclusive... pilot error by pilots with little or no time in make and model. The very first one is a guy show boating during his first flight in the thing. Then there is a flap overspeed with witnesses saying he was high and very fast. A classic stall/spin and what appeared to be a controlled flight into terrain. There was a poorly constructed pushrod.

I knew the family, post accident. Not quite correct on JJ's part.

As told to me by the bereaved father:

Youngster enjoyed a great day. Decided via radio that he would return quickly to give Dad a chance to also soar. Trying to descend rapidly, he opened flaps and then added speed. Parasitic drag is a mighty tool. The flap hinges were not as called out on plans. Multiple door hinges rather than piano hinge, IIRC.
Speed and load failed the spar at a hinge edge.

I cannot imagine the horror of watching a loved one lose their life before you. We cannot know if the young pilot exceeded flap speed, but it is possible.

The family established scholarships in their son's memory with EAA. The father had scratch built 2 airplanes before soaring.

Meanwhile, there are few folks with the skills to safely complete a partially built project. With fresh plans/materials, and a complete build, a BG-12 is a nice machine. I knew several guys (since gone of old age) who loved theirs.

Cindy

On Thursday, December 5, 2019 at 6:34:23 PM UTC-6, wrote:
It is located at Eufaula, OK (F08).

PM sent to address used for posting.

Steve Leonard

Thanks Cindy, sometimes accident reports don't list everything.