14 CFR 27.695 - Power boost and power-operated control system.
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(a) If a power boost or power-operated control system is used, an alternate system must be immediately available that allows continued safe flight and landing in the event of—
(b) Each alternate system may be a duplicate power portion or a manually operated mechanical system. The power portion includes the power source (such as hydraulic pumps), and such items as valves, lines, and actuators.
Title 14 published on 2014-01-01
no entries appear in the Federal Register after this date.