Airworthiness directives › 2023-07-03
AD 2023-07-03 Airworthiness Directives; Leonardo S.p.a. Helicopters
Models named: AB412, AB412 EP. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Leonardo S.p.a. Model AB412 and AB412 EP helicopters, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency AD 2022-0084, dated May 11, 2022 (EASA AD 2022-0084).
Unsafe condition
This AD was prompted by a report of a fatigue crack in a left-hand (LH) fin spar cap. The FAA is issuing this AD to detect a crack, a loose or missing rivet, damage, or distortion. The unsafe condition, if not addressed, could result in stress concentrations at the edge of the rivet hole, possibly resulting in reduced structural integrity of the fin spar and subsequent loss of control of the helicopter.
Affected ADs
None.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1