Code of Federal Regulations · Section
§ 25.781 — Cockpit Control Knob Shape
14 C.F.R. § 25.781
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Cockpit control knobs must conform to the general shapes (but not necessarily the exact sizes or specific proportions) in the following figure:
Authorizing Statute
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Federal Aviation Administration49 U.S.C. § 106
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Air transportation security49 U.S.C. § 44903