14 CFR Part 382 Nondiscrimination on the Basis of Disability in Air Travel (Air Carrier Access Act) (with amendments issued through May 2016)

(ii) Volume control. Automated kiosks must provide volume control complying with paragraphs (c)(5)(ii)(A) and (B) of this section.

(A) Private listening. Where speech required by paragraph (c)(5)(i) of this section is delivered through a mechanism for private listening, the automated kiosk must provide a means for the user to control the volume. A function must be provided to automatically reset the volume to the default level after every use.

(B) Speaker volume. Where sound is delivered through speakers on the automated kiosk, incremental volume control must be provided with output amplification up to a level of at least 65 dB SPL. Where the ambient noise level of the environment is above 45 dB SPL, a volume gain of at least 20 dB above the ambient level must be user selectable. A function must be provided to automatically reset the volume to the default level after every use.