Is AD 2026-10-18 a recurring Airworthiness Directive?

No — AD 2026-10-18 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2026-10-18 apply to?

AD 2026-10-18 applies to Embraer S.A. — models EMB-505. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2026-10-18

one-time

Official AD 2026-10-18 · FR doc 2026-10854 · 2026-06-01 · airframe

Airworthiness Directives; Embraer S.A. Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Embraer S.A. (Embraer) Model EMB-505 airplanes. This AD was prompted by the possibility that some airplanes may have invalid horizontal stabilizer (HS) backlash test results due to the use of incorrect procedures. This AD requires inspecting the airplane's left- hand (LH) and right-hand (RH) HS backlash and replacement, as applicable, of certain hinge point and pitch trim actuator attachment parts and the pitch trim actuator. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2026-10-18 applies to

MakesEmbraer S.A.

ModelsEMB-505

Applies to airplanes as identified in Agência Nacional de Aviação Civil (ANAC) AD 2025-04-01, effective April 15, 2025, certificated in any category.

Whether AD 2026-10-18 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 2026-10-18 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.