The lack of process rigor is odd to me. As a former pilot and operational flight test lead, aviation has specific processes to follow. Two links below that we tailored our testing to.
https://www.juran.com/blog/guide-to-failure-mode-and-effect-analysis-fmea/
https://quality-one.com/fmeca/
The environment the Titan entered is so much more dangerous than aviation...even a Rotor-head learns how to auto-rotate.
Quals and certifications for passenger aircraft are onerous because they should be.