How many spare safety information cards should the CRJ900 have?

The correct number of spare safety information cards that the CRJ900 should have is 100. This quantity typically aligns with regulations and safety protocols designed to ensure that all passengers on board have access to the necessary safety information. Safety information cards are critical for communicating emergency procedures and seatbelt usage, among other relevant safety tips, to passengers. The standard practice is to provide these cards in sufficient quantities to accommodate the number of passengers the aircraft is designed to carry, plus additional copies to account for various situations, such as lost or damaged cards. Having 100 spare cards allows for operations where a maximum capacity is reached, ensuring that compliance with safety regulations is adhered to and that all passengers can access this vital information during their flight.