FAA AC 20-184 PDF

Chapter 2 of this AC applies to the certification of installed lithium batteries on aircraft approved under Title 14 of the Code of Federal Regulations (14 CFR) parts 23, 25, 27, and 29 per:

Type certificates (TC),

Amended type certificates (ATC),

Supplemental type certificates (STC)

Amended supplemental type certificates (ASTC), and

Parts manufacturer approvals (PMA).

Note: The guidance can be used for any FAA process to approve the installation of lithium batteries.

Chapter 3 of this AC provides guidance on maintenance and operational considerations for lithium batteries on aircraft. Appendix A defines battery sizes in terms of watt hours. Appendix B lists related regulations and documents. Appendix C provides definitions. Appendix D discusses special conditions. Appendices E and F discuss means of compliance (MOC) to the special conditions. Appendix G provides a flow chart for lithium battery means of compliance certification process. Appendix H contains the AC feedback form.