Airworthiness directives › 2021-22-10
AD 2021-22-10 Airworthiness Directives; Leonardo S.p.a. Helicopters
Models named: A109E. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Leonardo S.p.a. Model A109E helicopters, certificated in any category, with an affected part as identified in European Union Aviation Safety Agency (EASA) AD 2021-0031, dated January 22, 2021 (EASA AD 2021-0031) installed.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 2021-0031.
Unsafe condition
This AD was prompted by reports that certain tail rotor gearbox assemblies were installed on Model A109E helicopters and those parts are not approved for installation on that helicopter model. Because tail rotor gearbox assembly part number (P/N) 109-0440-01-115 is not part of the type design for Model A109E helicopters, there are no overhaul or life limits included in the applicable maintenance manuals. The FAA is issuing this AD to address installation of tail rotor gearbox assembly P/N 109-0440-01-115 on Model A109E helicopters that do not have overhaul or life limits for that part. If a tail rotor gearbox is not properly maintained it could fail, resulting in reduced control of the helicopter.
Affected ADs
None.
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