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CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER F—AIR TRAFFIC AND GENERAL OPERATING RULES (parts 91 to 106) > PART 91—GENERAL OPERATING AND FLIGHT RULES > SUBPART G—Additional Equipment and Operating Requirements for Large and Transport Category Aircraft (§91.601 to §91.615-91.699) > 91.603—Aural speed warning device.
91.603—Aural speed warning device.
No person may operate a transport category airplane in air commerce unless that airplane is equipped with an aural speed warning device that complies with § 25.1303(c)(1).