What is an Electronic Flight Bag (EFB) and what functions does it support?

EFBs are electronic devices hosting software for flight operations, replacing paper documents. Classes: Type A/B (portable tablets, limited integration), Type C (installed, higher integration level). Functions: Document display (charts, manuals, MEL), Performance calculations (takeoff/landing, weight and balance), Moving map/terrain awareness, Approach briefings, Electronic checklists, and Maintenance access. Certification levels: Hardware (DO-160 environmental), Software (DO-178C for flight-critical functions), and Applications (specific approval based on function criticality). Benefits: Reduced paper weight, Real-time updates, Enhanced efficiency, and Improved situational awareness. iPad EFBs widespread (with DO-311A mounts); installed systems on 787, A380. FAA AC 120-76 provides guidance.