Fuselage – Rear Structure Junction Frame Reinforcement Angles – Inspection
Superseded. Comply with 2022-0051, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2014-0076R2
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform initial and repetitive inspections of the affected reinforcement angles within specified flight hour thresholds, with inspections not exceeding 10 or 165 flight hours intervals as defined. If cracks are found, corrective actions must be taken before further flight. Alternatively, operators can apply the approved modification service bulletins to terminate inspection requirements. Compliance deadlines start from the original AD effective date of 27 March 2014, with specific inspection windows detailed in the directive.
Summary
EASA Airworthiness Directive 2014-0076R3 is an updated safety directive addressing inspection and modification requirements for Airbus Helicopters AS 350 and AS 355 models. It focuses on the rear structure junction frame reinforcement angles, specifically parts with P/N 350A08.2493.21 or 350A08.2493.23, to prevent cracks that could lead to tail boom loss. The directive mandates repetitive inspections and optional terminating modifications to ensure continued airworthiness.
What changed
This revision excludes AS 355 NP helicopters with MOD 073922 embodied in production from applicability and updates related service bulletins. It revises inspection intervals and clarifies terminating actions through optional modifications that cancel repetitive inspections. The directive supersedes the previous revision 2014-0076R2 dated 20 August 2020.
Why it matters
This directive is critical for operators and maintenance organizations to prevent structural failure of the tail boom due to undetected cracks in reinforcement angles. Compliance ensures helicopter safety and regulatory adherence, avoiding potential catastrophic failures. It also provides clear guidance on inspection frequency and modification options to streamline maintenance planning.
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