Is AD 2018-26-05 a recurring Airworthiness Directive?

No — AD 2018-26-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-26-05 apply to?

AD 2018-26-05 applies to The Boeing Company — models 777-200, 777-200LR, 777-300, 777-300ER, 777F, 777. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-26-05

one-time

Official AD 2018-26-05 · FR doc 2018-28075 · 2018-12-28 · airframe

Airworthiness Directives; The Boeing Company Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD was prompted by reports of latently failed engine fuel shutoff spar valves discovered during fuel filter replacement. This AD requires inspecting to determine the part numbers (P/Ns) of the motor-operated valve (MOV) actuators at the engine fuel shutoff spar valve positions, installing MOV actuators having a certain acceptable part number or software if necessary, and revising the maintenance or inspection program to add a new airworthiness limitation. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2018-26-05 applies to

MakesThe Boeing Company

Models777-200, 777-200LR, 777-300, 777-300ER, 777F, 777

Excludes airplanes with line numbers 1165 and subsequent.

Whether AD 2018-26-05 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 2018-26-05 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.