This AC provides you, the applicant, with information and guidance on how you can protect aircraft electrical and electronic systems from the effects of lightning. This AC describes a means, but not the only means, for you to demonstrate compliance with 14 CFR 23.1306 (amendment 23-61), 23.2515, 25.1316, 27.1316, or 29.1316, Electrical and electronic system lightning protection, as they pertain to the type or supplemental type certification of your aircraft.

This AC provides guidance for a new type certificate (TC) or a change to an existing TC when the certification basis requires you to address the HIRF certification requirements of §§ 23.1308 (Amendment 23-57), 23.2520 (Amendment 23-65), 25.1317, 27.1317, or § 29.1317.