Powerplant — Aft Engine Mount Retainers — Replacement
- Published
- Effective
- Deadline
- Replaces
- 2017-0251
- Replaces
- 2020-0085
- Replaces
- 2017-0138
- Replaces
- 2016-0010
- Replaces
- 2015-0021
- Replaces
- 2013-0050
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A318, A319, A320, and A321 aircraft must perform repetitive detailed inspections of aft engine mount inner retainers every 12 months if affected parts are installed. Damaged or cracked retainers must be replaced before the next flight. Modification or replacement of affected parts must be completed within 60 months after 16 August 2017. Installation of dull finish or non-conforming retainers is prohibited from 4 May 2020 onward.
Summary
EASA Airworthiness Directive 2020-0085R1 is a regulatory update addressing the replacement and inspection of aft engine mount retainers on Airbus A318, A319, A320, and A321 aircraft equipped with CFM56-5A/5B engines. The directive focuses on preventing in-flight loss of aft engine mount links due to cracked or broken retainers caused by vibration and surface finish issues. It applies to specific part numbers of aft engine mount assemblies and includes instructions for inspections, replacements, and modifications.
What changed
EASA AD 2020-0085R1 revises the previous AD 2020-0085 by extending the compliance time for modification of affected aft engine mount retainers and introducing new requirements for aircraft equipped with engines fitted with a turbine rear frame (TRF) with 4 lugs configuration. It updates the service bulletin references and clarifies installation prohibitions for certain parts with dull surface finishes or production quality deficiencies.
Why it matters
This directive is critical for aviation professionals to ensure the structural integrity of engine mounts, preventing potential in-flight failures that could lead to aircraft damage. Operators and maintenance organizations must comply to maintain airworthiness and avoid grounding aircraft. The AD provides clear instructions to identify, inspect, and replace affected parts, supporting safe and reliable aircraft operations.
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New ADs and bulletins for Airbus A318, A319, A320 and A321, summarized like this page, every Monday.