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20-136 - Protection of Aircraft Electrical/Electronic Systems against the Indirect Effects of Lightning (Cancelled)

Cancelled By
Date Cancelled
December 21, 2006
Date Issued
March 05, 1990
Responsible Office
ANM-111,  Northwest Mountain Region - Transport Airplane Directorate
Provides information and guidance concerning an acceptable means, but not the only means, of compliance with Parts 23, 25, 27, and 29 of the FAR as applicable for preventing hazardous effects, due to lightning, from occurring to electrical/electronic systems performing critical essential functions. This material is neither mandatory nor regulatory in nature and does not constitute a regulation. The applicant may elect to establish an alternative method of compliance that is acceptable to the FAA