Plain English Meaning

A tablet, laptop, or similar device the pilot brings into the cockpit to access charts and flight information, instead of using paper or a built-in screen. It belongs to the pilot, not the airplane.

Full Definition

A portable EFB is an Electronic Flight Bag device that is not permanently mounted in the aircraft and can be carried in and out by the pilot. It is typically a tablet or laptop running aviation applications that display charts, approach plates, checklists, and other flight information. Because it is not installed equipment, it does not require FAA airworthiness approval, but its use must comply with operator authorization and procedures that prevent interference with aircraft systems and pilot duties.