Regulation Text
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).
The short answer
(14 CFR § 91.603) No person may operate a transport category airplane in air commerce unless it is equipped with an aural speed warning device that complies with § 25.1303(c)(1). The rule mandates an audible overspeed warning for transport category airplanes operated in air commerce.
Research Notes
Common Questions
What does § 91.603 require for transport category airplanes?
A transport category airplane operated in air commerce must be equipped with an aural speed warning device that complies with § 25.1303(c)(1).
"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)." — 14 CFR § 91.603
Does this rule apply outside air commerce?
The requirement in § 91.603 is stated for operation of a transport category airplane in air commerce; that is the condition the rule attaches to.
"No person may operate a transport category airplane in air commerce unless that airplane is equipped with an aural speed warning device ..." — 14 CFR § 91.603
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AOA's Decoded pages are plain-English interpretation for training and reference. They are not legal advice and do not replace the official regulation. Always confirm current requirements against the authoritative source before acting.