Aircraft
FAA Revises Fuel Tank Lightning-protection Rules
Rule removes the mandate for manufacturers to provide triple-redundant fault tolerance in lightning protection.

Newly certified Part 25 airplanes are the subject of FAA rulemaking that revises the requirements for protecting fuel tanks and related systems from lightning strikes. This action, based on a 2014 notice of proposed rulemaking, is effective on November 19. Besides new type certification (TC) applications, the rules also apply to amended TCs and/or STCs for “significant-level change projects,” the agency said.


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