|Quoting SafetyDude (Reply 21):|
Maybe someone can verify the FAR for this, but I've read a number of crew manuals that state if one safety card cannot be provided per seat, the minimum to be provided is one card per seat grouping (i.e. two cards per row for 3-3, three cards for 3-3-3).
14CFR121.571(b) states as follows:
(b) Each certificate holder must carry on each passenger-carrying airplane, in convenient locations for use of each passenger, printed cards supplementing the oral briefing. Each card must contain information pertinent only to the type and model of airplane used for that flight, including—
(1) Diagrams of, and methods of operating, the emergency exits;
(2) Other instructions necessary for use of emergency equipment; and
(3) No later than June 12, 2005, for Domestic and Flag scheduled passenger-carrying flights, the sentence, “Final assembly of this airplane was completed in (INSERT NAME OF COUNTRY).”