Aviation Training Experts™

advisory circular

AC 97-78A Use of Electronic Flight Bags

AC 91-78A Version 02/23/24
All Library Documents FAA Source PDF

Chapter AC No: 91-78A

Use of Electronic Flight Bags

1. PURPOSE OF THIS ADVISORY CIRCULAR (AC).

This AC provides operational guidance to aircraft owners, operators, and pilots operating aircraft under Title 14 of the Code of Federal Regulations (14 CFR) part 91 who want to replace required paper information and/or utilize hosted database and software applications as part of Electronic Flight Bag (EFB) functionality. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to replace required paper information and/or utilize hosted database and software applications as part of EFB functionality. However, if you use the means described in the AC, you must follow it in all important respects. The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

2. AUDIENCE.

The primary audience for this AC is all owners, operators, and pilots of aircraft conducting instrument flight rules (IFR) or visual flight rules (VFR) preflight, flight, and postflight operations conducted under part 91, unless prohibited by a specific section of 14 CFR Chapter I, Subchapter F.

3. WHERE YOU CAN FIND THIS AC.

You can find this AC on the Federal Aviation Administration’s (FAA) website at https://www.faa.gov/regulations_policies/advisory_circulars and the Dynamic Regulatory System (DRS) at https://drs.faa.gov.

4. WHAT THIS AC CANCELS.

AC 91-78, Use of Class 1 or Class 2 Electronic Flight Bag (EFB), dated July 20, 2007, is canceled.

5. RELATED REGULATIONS.

  1. Section 91.21, Portable Electronic Devices.

2. Section 91.103, Preflight Action.

3. Section 91.503, Flying Equipment and Operating Information.

4. Section 91.1033, Operating Information Required.

6. RELATED READING MATERIALS (current editions):

  1. AC 91.21-1, Use of Portable Electronic Devices Aboard Aircraft.
  1. AC 120-76, Authorization for Use of Electronic Flight Bags, Appendix C (as applicable).
  1. International Civil Aviation Organization (ICAO) Annex 4, Aeronautical Charts, Chapter 20, Electronic Aeronautical Chart Display.
  1. ICAO Annex 6, Operation of Aircraft, Part II, International General Aviation— Aeroplanes.

5. ICAO Circular 340, Guidelines for the Expanded Use of Portable Electronic Devices.

6. ICAO Document 10020, Manual on Electronic Flight Bags (EFBs).