EASA AD US-2020-21-17
SUPERSEDED BY FAA AD 2022-08-12
Airworthiness Directive 2020-21-17 is a final rule issued by the Federal Aviation Administration (FAA) that supersedes AD 2018-16-05 and applies to certain Boeing 757-200, -200PF, -200CB, and -300 series airplanes. It addresses repetitive inspections for skin cracking, shim migration, diagonal brace cracking, and fastener looseness at the upper link drag fittings and adds new inspection requirements for additional fastener hole locations. The directive aims to maintain structural integrity of the engine strut by preventing unsafe conditions caused by cracks and bolt rotation.