Is AD 2019-17-01 a recurring Airworthiness Directive?

No — AD 2019-17-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2019-17-01 apply to?

AD 2019-17-01 applies to Learjet — models 60. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2019-17-01

one-time

Official AD 2019-17-01 · FR doc 2019-18427 · 2019-08-28 · airframe

Airworthiness Directives; Learjet, Inc. Airplanes

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2017-11-09 for certain Learjet, Inc. (Learjet), Model 60 airplanes. AD 2017-11-09 required a one-time fluorescent dye penetrant inspection of the fuselage skin for corrosion, additional related inspections and corrective actions as necessary, and reporting the inspection results to the FAA. This AD clarifies the compliance time for the inspection and corrects an error in the inspection area of the fuselage skin. This AD was prompted by the identification of an error in the fluorescent dye penetrant inspection of the fuselage skin and an ambiguity in the compliance time for the fluorescent dye penetrant inspection. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2019-17-01 applies to

MakesLearjet

Models60

Serial-conditional — narrows to serials 60-002–60-430.

Applies only to airplanes in the serial range having (1) a dorsal-mounted oxygen bottle, or (2) the dorsal-mounted oxygen bottle removed but the oxygen line fairing retained on top of the fuselage.

Whether AD 2019-17-01 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 2019-17-01 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.