Is AD 2011-4468 a recurring Airworthiness Directive?

No — AD 2011-4468 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2011-4468 apply to?

AD 2011-4468 applies to Bell Helicopter Textron Canada Limited — models 427. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2011-4468

one-time

AD 2011-4468 · 2011-03-10 · airframe

Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 427 Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Which aircraft AD 2011-4468 applies to

MakesBell Helicopter Textron Canada Limited

Models427

Applies to all serial numbers, certificated in any category. AD addresses tail rotor driveshaft hanger bearing bracket P/N 427-044-223-101 found cracked due to fatigue from a tooling mark.

Whether AD 2011-4468 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 2011-4468 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.