Is AD 2018-19-12 a recurring Airworthiness Directive?

No — AD 2018-19-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2018-19-12 apply to?

AD 2018-19-12 applies to Bombardier — models CL-600-2C10, CL-600-2D15, CL-600-2D24, CL-600. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2018-19-12

one-time

Official AD 2018-19-12 · FR doc 2018-20350 · 2018-09-26 · airframe

Airworthiness Directives; Bombardier, Inc., Airplanes

What this AD requires

We are superseding Airworthiness Directive (AD) 2015-17-04, which applied to certain Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), Model CL-600-2D15 (Regional Jet Series 705), and Model CL-600-2D24 (Regional Jet Series 900) airplanes. AD 2015-17-04 required replacement of left and right fixed control rods and lever assemblies of the elevator control system. This AD adds a detailed visual inspection of the key washers and self-locking nuts of the elevator control linkages and corrective actions if necessary. This AD was prompted by reports of a disconnect between the elevator lever and control rod and a report indicating that certain revisions of the service information were missing instructions for proper installation of certain key washers. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2018-19-12 applies to

MakesBombardier

ModelsCL-600-2C10, CL-600-2D15, CL-600-2D24, CL-600

Serial-conditional — narrows to serials 10002–10337, 15001–15298.

CL-600-2C10 airplanes (marketed as Regional Jet Series 700, 701, 702), serial numbers 10002 through 10337; CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes share serial numbers 15001 through 15298.

Whether AD 2018-19-12 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 2018-19-12 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.