14 CFR 136.7: Passenger briefings.

(a) Before takeoff each pilot in command shall ensure that each passenger has been briefed on the following:

(1) Procedures for fastening and unfastening seatbelts;

(2) Prohibition on smoking; and

(3) Procedures for opening exits and exiting the aircraft.

(b) For flight segments over water beyond the shoreline, briefings must also include:

(1) Procedures for water ditching;

(2) Use of required life preservers; and

(3) Procedures for emergency exit from the aircraft in the event of a water landing.

(c) If any passengers on board a flight conducted under this part are secured with a supplemental restraint system, the pilot in command of that flight must ensure those passengers are briefed in accordance with § 91.108(g) of this chapter.