Is AD 2016-04-12 a recurring Airworthiness Directive?

No — AD 2016-04-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2016-04-12

Q: Which aircraft does AD 2016-04-12 apply to?

AD 2016-04-12 applies to Turbomeca — models Arriel 2B, Arriel 2B1, Arriel 2C, Arriel 2C1, Arriel 2C2, Arriel 2D, Arriel 2E, Arriel 2S1. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2016-04-12 · FR doc 2016-05318 · 2016-03-10 · turboshaft engine

Airworthiness Directives; Turbomeca S.A. Turboshaft Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Turbomeca S.A. Arriel 2B, 2B1, 2C, 2C1, 2C2, 2D, 2E, 2S1, and 2S2 turboshaft engines. This AD requires inspection, and, depending on the results, removal of the engine accessory gearbox (AGB). This AD was prompted by a report of an uncommanded in-flight shutdown (IFSD) of an Arriel 2 engine caused by rupture of the 41-tooth gear, which forms part of the bevel gear in the engine AGB. We are issuing this AD to prevent failure of the engine AGB, which could lead to in-flight shutdown, damage to the engine, and damage to the aircraft.

Which aircraft AD 2016-04-12 applies to

MakesTurbomeca

ModelsArriel 2B, Arriel 2B1, Arriel 2C, Arriel 2C1, Arriel 2C2, Arriel 2D, Arriel 2E, Arriel 2S1, Arriel 2S2, Arriel

Part-conditional — 0292120650.

Applies only to engines with an engine accessory gearbox (AGB) P/N 0292120650 that has a machined front casing installed.

Whether AD 2016-04-12 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 2016-04-12 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.