46 C.F.R. § 62.30-1 Failsafe.
Title 46 - Shipping
(a) The failsafe state must be evaluated for each subsystem, system, or vessel to determine the least critical consequence. (b) All automatic control, remote control, safety control, and alarm systems must be failsafe.
Title 46: Shipping
PART 62—VITAL SYSTEM AUTOMATION
Subpart 62.30—Reliability and Safety Criteria, All Automated Vital Systems
§ 62.30-1 Failsafe.

