14 C.F.R. § 414.23
The FAA will determine whether a safety element is eligible for and may be issued a safety element approval. The FAA will base its determination on performance-based criteria, against which it may assess the effect on public health and safety and on safety of property, in the following hierarchy:
(d) Applicant-developed criteria. Applicant-developed criteria are performance standards customized by the manufacturer that intends to produce the system, system component, or part. The applicant-developed criteria must define—