Is AD 2019-10993 a recurring Airworthiness Directive?

No — AD 2019-10993 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2019-10993 apply to?

AD 2019-10993 applies to Textron Aviation, Inc. — models 525, 525A, 525B. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2019-10993

one-time

AD 2019-10993 · 2019-05-24 · airframe

Airworthiness Directives; Textron Aviation, Inc. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Textron Aviation, Inc. (type certificate previously held by Cessna Aircraft Company) Models 525, 525A, and 525B airplanes with Tamarack active load alleviation system (ATLAS) winglets installed in accordance with Supplemental Type Certificate (STC) SA03842NY. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as malfunction of the ATLAS. We are issuing this AD to require actions to address the unsafe condition on these products.

Which aircraft AD 2019-10993 applies to

MakesTextron Aviation, Inc.

Models525, 525A, 525B

Type Certificate previously held by Cessna Aircraft Company. Applies only to airplanes with Tamarack Active Load Alleviation System (ATLAS) winglets installed in accordance with Supplemental Type Certificate (STC) SA03842NY.

Whether AD 2019-10993 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 2019-10993 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.