Is AD 2020-06-11 a recurring Airworthiness Directive?

No — AD 2020-06-11 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2020-06-11 apply to?

AD 2020-06-11 applies to Md Helicopters Inc. — models 600N. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-06-11

one-time

Official AD 2020-06-11 · FR doc 2020-05996 · 2020-03-24 · airframe

Airworthiness Directives; MD Helicopters Inc. Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for MD Helicopters Inc. (MDHI) Model 600N helicopters. This AD requires establishing a life limit for the main rotor (M/R) blade upper control collective/longitudinal link assembly (link assembly). This AD was prompted by the discovery that the life limit was omitted from the maintenance manual. The actions of this AD are intended to prevent an unsafe condition on these products.

Which aircraft AD 2020-06-11 applies to

MakesMd Helicopters Inc.

Models600N

Part-conditional — 600N7617-1.

Applies to helicopters with a yaw stability augmentation system AND main rotor (M/R) blade upper control collective/longitudinal link assembly P/N 600N7617-1 installed.

Whether AD 2020-06-11 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 2020-06-11 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.