Airworthiness directives › 2020-09-15
AD 2020-09-15 Airworthiness Directives; Airbus Helicopters
Models named: AS332C, AS332C1, AS332L, AS332L1. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters Model AS332C, AS332C1, AS332L, and AS332L1 helicopters, certificated in any category, equipped with a dual hoist installation and de-icing system, except those that have Airbus Helicopters modification 0722907 installed in production.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 7 days after the effective date of this AD: Remove the removable parts of the dual hoist installation or remove the de-icing system in accordance with the instructions of section 3.B of Airbus Helicopters Emergency Alert Service Bulletin AS332 01.00.91, Revision 1, dated December 4, 2019, or Section 3.B.2 of Airbus Helicopters Emergency Alert Service Bulletin AS332 01.00.96, Revision 0, dated December 4, 2019, as applicable to your helicopter, except you are not required to contact Airbus Helicopters.
Unsafe condition
This AD was prompted by a report of vibrations around the 12Hz frequency due to the specific helicopter configuration. The FAA is issuing this AD to address this condition, which could generate divergent aeromechanic coupling between the helicopter structure and the rotor, possibly resulting in mechanical failure of structural parts and 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