14 CFR §382.115

1. (a)You must conduct an individual safety briefing for any passenger where required by 14 CFR 121.571(a)(3) and (a)(4), 14 CFR 135.117(b), or other FAA requirements.
2. (b)You may offer an individual briefing to any other passenger, but you may not require an individual to have such a briefing except as provided in paragraph (a) of this section.
3. (c)You must not require any passenger with a disability to demonstrate that he or she has listened to, read, or understood the information presented, except to the extent that carrier personnel impose such a requirement on all passengers with respect to the general safety briefing. You must not take any action adverse to a qualified individual with a disability on the basis that the person has not “accepted” the briefing.
4. (d)When you conduct an individual safety briefing for a passenger with a disability, you must do so as inconspicuously and discreetly as possible.
5. (e)The accessibility requirements for onboard video safety presentations that carriers must meet are outlined in section 382.69.