AD Amdt-39-11471
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330-301 | Airworthiness Directives; Airbus Model A330-301, -321, -322 Series Airplanes, and Model A340-211, -212, -213, -311, -312, and -313 Series Airplanes |
Unsafe Condition
Premature wear of the dynamic seals between the actuator piston and the piston bearing in the yaw damper actuator installed on active position could lead to hydraulic leakage from the yaw damper actuator, potentially resulting in complete loss of the green hydraulic circuit and reduced controllability of the airplane.
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Required Actions
Replace the yaw damper actuator installed on active position with a new or overhauled yaw damper actuator in accordance with Airbus Service Bulletin A330-27-3055, Revision 01, or A340-27-4063, Revision 01, as applicable. Repeat the replacement at intervals not to exceed 6,500 flight hours.
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Compliance Time
Within 500 flight hours after the effective date of this AD, or prior to the accumulation of 6,500 total flight hours, whichever occurs later.
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Affected Aircraft
All Airbus Model A330-301, -321, and -322 series airplanes, and Model A340-211, -212, -213, -311, -312, and -313 series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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