Is AD 2016-26-04 a recurring Airworthiness Directive?

No — AD 2016-26-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2016-26-04 apply to?

AD 2016-26-04 applies to Robinson Helicopter Company — models R44, R44 II, R66. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2016-26-04

one-time

Official AD 2016-26-04 · FR doc 2016-30832 · 2017-01-04 · airframe

Airworthiness Directives; Robinson Helicopter Company Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44, R44 II, and R66 helicopters. This AD requires inspecting the main rotor blade (MRB). This AD was prompted by a determination that some MRBs may have reduced blade thickness due to blending out corrosion. The actions are intended to prevent the unsafe condition on these products.

Which aircraft AD 2016-26-04 applies to

MakesRobinson Helicopter Company

ModelsR44, R44 II, R66

Part-conditional — C016-7, F016-2.

Applies to R44 and R44 II helicopters with main rotor blade (MRB) P/N C016-7, Revision AA through AE, installed; and to R66 helicopters with MRB P/N F016-2, Revision A through E, installed.

Whether AD 2016-26-04 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 2016-26-04 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.