AD 2019-16-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | SAS | Airworthiness Directives; Airbus SAS Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus SAS Airplanes |
Unsafe Condition
A case was reported by an A350-1041 operator where a front engine mount primary pin had moved axially out of place. Investigations revealed that washers with incorrect P/N had been installed on the subject engine mount pins. A350-941 aeroplanes are also considered as potentially affected. The engine mount assembly has a fail-safe design, loads are carried by two links in the left-hand and right-hand positions and in case of failure, a ``fail-safe'' link pin in the centre position is activated and takes the loads. This condition, if not detected and corrected, may lead to disengagement of a primary engine mount pin, which along with an additional failure of the ``fail-safe'' link pin, could possibly result in in-flight detachment of an engine, with consequent reduced control of the aeroplane.
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Required Actions
Inspect the washers installed on the front and rear engine mount primary pins and thrust links pins of both engines, and depending on findings, accomplish applicable corrective action(s).
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Compliance Time
Before further flight
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Affected Aircraft
Airbus SAS Model A350-941 and -1041 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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