Is AD 2016-26-01 a recurring Airworthiness Directive?

No — AD 2016-26-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2016-26-01 apply to?

AD 2016-26-01 applies to Agusta — models AB139, AW139. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2016-26-01

one-time

Official AD 2016-26-01 · FR doc 2016-30285 · 2016-12-27 · airframe

Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Agusta Model AB139 and AW139 helicopters. This AD requires performing operational checks of both hydraulic systems. This AD was prompted by an assessment of the hydraulic systems of the helicopter following an accident. These actions are intended to prevent the unsafe condition on these products.

Which aircraft AD 2016-26-01 applies to

MakesAgusta

ModelsAB139, AW139

Applies to all serial numbers except serial number 31007, 31094, 31293, 31301, 31303, 31313, and 31329.

Whether AD 2016-26-01 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 2016-26-01 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.