Is AD 2011-20-05 a recurring Airworthiness Directive?

Yes — AD 2011-20-05 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2011-20-05 apply to?

AD 2011-20-05 applies to Eurocopter — models EC225LP, EC225. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2011-20-05

recurring

Official AD 2011-20-05 · FR doc 2011-27771 · 2011-10-27 · airframe

Airworthiness Directives; Eurocopter France (Eurocopter) Model EC225LP Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for the Eurocopter Model EC225LP helicopters. This AD requires inspecting the dome fairing support for a crack at the dome fairing attachment point. If a crack is found, this AD requires replacing the dome fairing support and the associated coning stop support assembly before further flight. If no crack is found, this AD requires repetitive inspections and retorquing the screws at specified intervals. This AD is prompted by the discovery of two fatigue cracks in the dome fairing attachment on the dome fairing support. This condition, if not corrected, could lead to the loss of the dome fairing in flight, causing damage to the helicopter and injury to people on the ground.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2011-20-05 applies to

MakesEurocopter

ModelsEC225LP, EC225

Applies to helicopters that have not been modified in accordance with Eurocopter Modification (MOD) 0743718.

Whether AD 2011-20-05 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 2011-20-05 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.