Minimum flight crew.
CFR · 2024-01-01 · US · Title 14
The minimum flight crew must be established so that it is sufficient for safe operation, considering— (a) The workload on individual crewmembers; (b) The accessibility and ease of operation of necessary controls by the appropriate crewmember; and (c) The kinds of operation authorized under § 27.1525.
official document · source cfr-2024 · id 14:§ 27.1523