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You Need an Electronic Flight Bag

The AC defines an EFB as an electronic display system intended mainly for cabin or cockpit use. To that end, an EFB can display aviation data such as charts and make basic calculations such as time, fuel and distance calculations. An EFB can also include other databases, perhaps FARs, or additional applications such as crosswind, weight-and-balance and holding calculators.

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Key Takeaways:

  • FAA Advisory Circular 91-78 provides guidance for Part 91 pilots on using Class 1 (portable) and Class 2 (mounted) Electronic Flight Bags (EFBs), allowing them to replace paper charts and documents.
  • EFBs can be used to replace paper in all phases of flight, provided the information is current, up-to-date, and valid, and the EFB does not replace any system or equipment required by Part 91.
  • Class 1 EFBs are portable and cannot connect to aircraft systems (beyond charging), while Class 2 EFBs are mounted and may receive aircraft power and navigation data if properly approved and installed.
  • Pilots are responsible for ensuring EFB data currency, proper implementation, operational proficiency, physical security, and considering backup solutions for safe and effective use.
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You use a tablet in the airplane, right? You’ve probably got one of the popular apps like ForeFlight, Garmin Pilot, or WingX. You probably use it for charts and nav, but if you don’t use your tablet as a full electronic flight bag (EFB), you might be missing the boat.

Check the Advisory Circular

Back in 2007, the FAA issued AC 91-78, Use of Class 1 or Class 2 Electronic Flight Bag (EFB). Not only did the AC define an EFB, it also created regulatory distinctions and discrete rules governing Class 1 portable and Class 2 mounted EFBs. The AC gives Part 91 pilots guidance on how to safely transition from paper aeronautical charts and other cockpit documentation and replace it with an Electronic Flight Bag.

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