AD 2021-12-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | SAS | Airworthiness Directives; Airbus SAS Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus SAS Airplanes |
Unsafe Condition
The potential loss of two hydraulic systems (blue and green) in flight, instead of only one (green), which could lead to loss of all hydraulic circuits, possibly resulting in loss of control of the airplane.
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Required Actions
Inspecting for discrepancies of the hydraulic pressure switch harnesses of affected engines, and applicable corrective actions, including a visual inspection to identify the clip points where harnesses are not installed correctly, harness re-routing, and hydraulic system testing.
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Compliance Time
Before further flight
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Affected Aircraft
All Airbus SAS Model A330-243, A330-243F, A330-341, A330-342, and A330-343 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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