Is AD 2018-17-05 a recurring Airworthiness Directive?

No — AD 2018-17-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-17-05 apply to?

AD 2018-17-05 applies to Airbus Sas — models A350-941, A350-1041, A350. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-17-05

one-time

Official AD 2018-17-05 · FR doc 2018-17482 · 2018-08-15 · airframe

Airworthiness Directives; Airbus SAS Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for all Airbus SAS Model A350-941 and -1041 airplanes. This AD was prompted by reports that electro-hydrostatic actuators (EHAs), installed on the inboard ailerons, elevators, and rudder, had degraded insulation resistance in the direct drive solenoid valve (DDSOV), due to incorrect sealing application. This AD requires a check of the insulation resistance of the DDSOV of each affected EHA and applicable corrective actions. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2018-17-05 applies to

MakesAirbus Sas

ModelsA350-941, A350-1041, A350

Applies to all manufacturer serial numbers.

Whether AD 2018-17-05 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 2018-17-05 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.