Airworthiness directives › 2021-26-24
AD 2021-26-24 Airworthiness Directives; Leonardo S.p.a. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters
Models named: A109A, A109A II. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Leonardo S.p.a. (type certificate previously held by Agusta S.p.A.) Model A109A and A109A II helicopters, certificated in any category, with a main rotor (M/R) blade part number 109-0103-01-115 installed.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For each M/R blade identified in paragraph (c) of this AD: (1) Within 50 hours time-in-service or 3 months after the effective date of this AD, whichever occurs first, unless already done within the last 24 months for the M/R blade, and thereafter, at intervals not to exceed 24 months for the M/R blade, inspect the M/R blade by following the Accomplishment Instructions, paragraphs 1. through 5., of Leonardo Helicopters Alert Service Bulletin No. 109-155, dated March 13, 2020. (2) Before further flight, send the film for analysis and accomplish repair in accordance with a method approved by the Manager, General Aviation & Rotorcraft Section, International Validation Branch, FAA; or European Union Aviation Safety Agency (EASA); or Leonardo S.p.a Helicopters' EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature.
Unsafe condition
This AD was prompted by a report of internal corrosion of the spar of an M/R blade. The FAA is issuing this AD to prevent failure of an M/R blade due to corrosion on the internal surface of the spar. The unsafe condition, if not addressed, could result in loss of control of the helicopter.
Affected ADs
None.
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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