I remember (and got in my archives) a1994 article in a french magazine with 11 titanium bikes were tried : Merlin Litespeed, Kona HeiHei, Clark Kent, DBR…
One of the frame failed and the magazine showed all the frames in the weld institute for a Xray check.
If they were aeronautic parts, only the Merlin could be used in airplane with the better and perfect welding job.
The Kona Hei Hei and the Sandvik job was near in 2th place but didn't get the aeronautic quality.
All the litespeed parts were far behind, with some inclusion and "dust" in the weld job.