What do you say? Can I get an example?
Try the Air Navigation Order!
Passenger briefing by commander
88.—(1) Subject to paragraph (3), the commander of an aircraft registered in the United Kingdom must take all reasonable steps to ensure that before take-off on any flight, all passengers are made familiar with the position and method of use of—
(a) emergency exits;
(b) safety belts (with diagonal shoulder strap where required to be carried);
(c) safety harnesses (if required to be carried);
(d) oxygen equipment, lifejackets and the floor path lighting system (where required to be carried); and
(e) all other devices required by or under this Order and intended for use by passengers individually in the case of an emergency occurring to the aircraft.
(2) Subject to paragraph (3), the commander of an aircraft registered in the United Kingdom must also take all reasonable steps to ensure that in an emergency during a flight, all passengers are instructed in the emergency action which they should take.