AD 2020-09-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model AS332C | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
vibrations around the 12Hz frequency due to the specific helicopter configuration, 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.
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Required Actions
removing the removable parts of the dual hoist installation or removing the de-icing system, revising the Rotorcraft Flight Manual (RFM) for certain helicopters to incorporate certain limitations and installing a placard as an optional method of compliance.
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Compliance Time
Within 7 days
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Affected Aircraft
Airbus Helicopters Model AS332C, AS332C1, AS332L, and AS332L1 helicopters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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