Is AD 2006-07-20 a recurring Airworthiness Directive?

No — AD 2006-07-20 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2006-07-20 apply to?

AD 2006-07-20 applies to Turbomeca — models Makila 1 A2, Makila. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2006-07-20

one-time

Official AD 2006-07-20 · FR doc 06-3253 · 2006-04-05 · turboshaft engine

Airworthiness Directives; Turbomeca Makila 1 A2 Turboshaft Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Turbomeca Makila 1 A2 turboshaft engines. This AD requires upgrading the software version of the digital electronic control. This AD results from Turbomeca determining that Makila 1 A2 turboshaft engines with software version 9 installed in the digital electronic control unit (DECU), under certain conditions, could experience a free turbine overspeed and uncontained failure. We are issuing this AD to prevent overspeed and uncontained failure of the free turbine and damage to the helicopter.

Which aircraft AD 2006-07-20 applies to

MakesTurbomeca

ModelsMakila 1 A2, Makila

Applies to Makila 1 A2 engines with software version 9 installed in the digital electronic control unit (DECU).

Whether AD 2006-07-20 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 2006-07-20 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.