TPAC's parts are already SAE certified. "We offer a full range of SAE-AS81820 self-lubricating plain spherical bearings and SAE-AS81934 self-lubricating bushings, certified for aerospace use by NAVAIR."
The FAA accepts SAE certified parts as direct replacements for existing aircraft that have airworthiness certificates. TPAC is not building an aircraft that requires a type certificate approval by the FAA. As long as the replacement part (which can come from several different suppliers including TPAC) has an SAE certification then that satisfies the FAA.
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