Which items must each flight crew member have during line checks?

Each flight crew member is required to have specific items during line checks to ensure safety and compliance with operational standards. The presence of a flight jacket is essential as it typically serves as part of the uniform and ensures crew visibility. Additionally, having an emergency procedures handbook is vital as it provides crucial information that crew members may need to reference quickly in case of an emergency. This handbook contains important protocols, responsibilities, and procedures that could be critical during a flight situation. Therefore, the combination of both a flight jacket and an emergency procedures handbook fulfills the requirements for items that each flight crew member must possess during line checks, making this the correct choice.

The requirement for a first aid kit, while important for overall safety on board, is not a specific item that each individual crew member must carry during line checks, as it is typically carried in a designated location on the aircraft.