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AC 20-53A: Protection of Airplane Fuel Systems Against Fuel Vapor Ignition Due to Lightning
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1985-04-12
[PDF-570.35 KB]
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Alternative Title:Advisory Circulars from 1985
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Abstract:This Advisory Circular (AC) 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. Accordingly, this material is neither mandatory nor regulatory in nature and does not constitute a regulation. In lieu of following this method, the applicant may elect to establish an alternate method of compliance that is acceptable to the FAA for complying with the requirements of Section 23.954 and 25.954.
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