AMC 20-136A Aircraft Electrical and Electronic System Lightning Protection
Source document: Easy Access Rules for Acceptable Means of Compliance for Airworthiness of Products, Parts and Appliances (AMC-20) (Amendment 23)
AMC 20-136A Aircraft Electrical and Electronic System Lightning Protection
Summary
This document outlines acceptable means for demonstrating compliance with certification specifications related to aircraft electrical and electronic system lightning protection. While compliance with these guidelines is not mandatory, alternative methods must ensure equivalent safety and be approved. It addresses compliance for lightning effects on systems but excludes certain hazards.
Related Questions
The purpose of AMC 20-136A is to describe an acceptable means for demonstrating compliance with the applicable certification specifications (CSs) related to system lightning protection, specifically CS 23.1306/2515, CS 25.1316, CS 27.1316, and CS 29.1316. Compliance with this AMC is not mandatory; applicants may choose alternative means of compliance that meet relevant requirements and ensure an equivalent level of safety, subject to EASA approval.
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Related materials and certification specifications can be downloaded from the European Union Aviation Safety Agency (EASA) website at www.easa.europa.eu. This includes various certification specifications (CSs) and Acceptable Means of Compliance (AMC) relevant to aircraft electrical and electronic systems lightning protection.
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CS 23.2515, which is applicable for Amendment 5 and higher of CS-23, is a new specification similar to CS 23.1306. The associated AMC for CS 23.2515 is published separately, but AMC 20-136A can still be used as guidance for CS 23.2515, providing an acceptable equivalent means of compliance.
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In the context of this AMC, the modal verb 'must' indicates the necessary means required to demonstrate compliance with the applicable certification specifications (CSs) when using this AMC. It signifies mandatory actions that must be taken to ensure compliance.
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This AMC does not address lightning effects such as burning, eroding, and blasting of aircraft equipment, components, or wiring. Compliance for these effects is demonstrated by meeting the applicable certification specifications CS 23.867/2335, 25.581, 27.610, 27.865, 29.610, and 29.865, along with following the associated AMC.
* Aviation.Bot's Suggestion - Always consult the original regulation for confirmation
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