Skip to page content

USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

United States Department of Transportation United States Department of Transportation

AC 20-53B - Protection of Aircraft Fuel Systems Against Fuel Vapor Ignition Caused by Lightning (Cancelled)

Document Information

Number
20-53B
Title
Protection of Aircraft Fuel Systems Against Fuel Vapor Ignition Caused by Lightning
Date cancelled
2018-09-24
Cancellation notes
AC 20-53C
Date issued
2006-06-05
Office of Primary Responsibility
AIR-100
Description

a. This advisory circular (AC) will show you how to gain Federal Aviation Administration (FAA) approval of your compliance with Title 14, Code of Federal Regulations (14 CFR) §§ 23.954, 25.954, 27.954, and 29.954, Fuel system lightning protection. We recommend how you can protect the aircraft’s fuel system from lightning strikes that may ignite fuel vapors.

b. In establishing compliance to 14 CFR § 25.981, Fuel tank ignition prevention, this AC can also be used to supplement the guidance in AC 25.981-1, Fuel Tank Ignition Source Prevention Guidelines, for ignition prevention in regards to lightning.

c. This AC is not mandatory and does not constitute a regulation. It describes an acceptable means, but is not the only means, to show you how to gain certification for fuel system lightning protection. However, if you use the means described in this AC, you must follow it in all important respects.

Content
Cancels
Cancels
Number Title Date
20-53A Protection of Aircraft Fuel Systems Against Fuel Vapor Ignition Due to Lightning Provides information and guidance concerning an acceptable means, but not the only means, of compliance with Parts 23 or 25 of the Federal Aviation Regulations (FAR) applicable to preventing ignition of fuel vapors due to lightning. 1985-04-12