EASA AD US-2022-08-12: Superseded by FAA AD 2023-12-09

What to do

Operators of Boeing 757 airplanes must perform repetitive inspections for skin cracking, shim migration, diagonal brace cracking, and fastener looseness as specified in Boeing Alert Requirements Bulletin 757-57A0073 RB, Revision 2. On-condition corrective actions such as replacing parts and repairing cracks must be completed as required. Compliance with this AD is mandatory by June 10, 2022, the effective date of the directive.

Summary

FAA Airworthiness Directive 2022-08-12 is a final rule affecting all Boeing Company Model 757 airplanes. It supersedes AD 2020-21-17 and addresses issues related to skin cracking, shim migration, diagonal brace cracking, and fastener looseness at the upper link drag fittings and engine drag fitting joints. The directive mandates repetitive inspections and on-condition corrective actions to ensure structural integrity of the engine strut attachment.

What changed

This AD reduces the compliance times for certain groups of Boeing 757 airplanes compared to the previous AD 2020-21-17. It retains the original inspection and corrective action requirements but emphasizes earlier compliance to address reports of bolt rotation and cracks in fastener holes. Additionally, it clarifies inspection procedures and includes previously approved alternative methods of compliance from superseded ADs.

Why it matters

This directive is critical for maintaining the structural integrity of the engine strut on Boeing 757 airplanes, preventing potential separation of the engine and strut during flight. Operators, maintenance, and compliance teams must address these issues promptly to avoid unsafe conditions that could compromise flight safety. The reduced compliance times increase urgency for inspections and repairs, impacting maintenance scheduling and resource allocation.

What to do

Summary

What changed

Why it matters

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