Is AD 2014-12-07 a recurring Airworthiness Directive?

No — AD 2014-12-07 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2014-12-07 apply to?

AD 2014-12-07 applies to Agusta — models AB412, AB412EP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2014-12-07

one-time

Official AD 2014-12-07 · FR doc 2014-13838 · 2014-06-19 · airframe

Airworthiness Directives; Agusta S.p.A. Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 and AB412EP helicopters with a certain rotor brake pinion installed. This AD requires inspecting the rotor brake pinion for a crack, and replacing it if there is a crack. This AD is prompted by a report of a rotor brake pinion failure. These actions are intended to detect a crack on the rotor brake pinion and prevent failure of the rotor brake pinion, which could lead to detachment of parts inside the transmission and subsequent loss of control of the helicopter.

Which aircraft AD 2014-12-07 applies to

MakesAgusta

ModelsAB412, AB412EP

Part-conditional — 412-040-301-101.

Applies only to helicopters with a rotor brake pinion P/N 412-040-301-101 installed.

Whether AD 2014-12-07 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 2014-12-07 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.