Is AD 2018-04439 a recurring Airworthiness Directive?

No — AD 2018-04439 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-04439 apply to?

AD 2018-04439 applies to Safran Helicopter Engines — models Arrius 2F, Arrius. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-04439

one-time

AD 2018-04439 · 2018-03-06 · turboshaft engine

Airworthiness Directives; Safran Helicopter Engines, S.A., Turboshaft Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Safran Helicopter Engines, S.A., Arrius 2F turboshaft engines. This AD requires inspection and replacement of the magnetic heads installed on oil system electrical magnetic plugs. This AD was prompted by reports from the manufacturer of a batch of non-conforming magnetic heads installed on electrical magnetic plugs. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2018-04439 applies to

MakesSafran Helicopter Engines

ModelsArrius 2F, Arrius

Serial-conditional — narrows to serials DU4621–DU5053.

Part-conditional — 9520011545.

Applies to engines with oil system electrical magnetic plug magnetic head, P/N 9520011545, with serial numbers DU4621 through DU5053 inclusive, installed.

Whether AD 2018-04439 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2018-04439 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.