Is AD 2018-22-12 a recurring Airworthiness Directive?

No — AD 2018-22-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2018-22-12

Q: Which aircraft does AD 2018-22-12 apply to?

AD 2018-22-12 applies to Bombardier — models CL-600-2C10, CL-600-2D15, CL-600-2D24, CL-600-2E25, CL-600. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2018-22-12 · FR doc 2018-24003 · 2018-11-07 · airframe

Airworthiness Directives; Bombardier, Inc. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes; Model CL-600-2D15 (Regional Jet Series 705) airplanes; Model CL-600-2D24 (Regional Jet Series 900) airplanes; and Model CL- 600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by reports of damage to the protective coating and corrosion on the piston/axle of the main landing gear (MLG), caused by friction between the inboard axle sleeve and the axle thrust face. This AD requires revising the maintenance or inspection program, as applicable, to incorporate a detailed inspection of the MLG piston/axle for damage to the protective coating and for corrosion. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2018-22-12 applies to

MakesBombardier

ModelsCL-600-2C10, CL-600-2D15, CL-600-2D24, CL-600-2E25, CL-600

Serial-conditional — narrows to serials 10002–?, 15001–?, 19001–?.

Serial number 10002 and subsequent applies to Model CL-600-2C10 (Regional Jet Series 700/701/702); 15001 and subsequent applies to Model CL-600-2D15 (Regional Jet Series 705) and Model CL-600-2D24 (Regional Jet Series 900); 19001 and subsequent applies to Model CL-600-2E25 (Regional Jet Series 1000).

Whether AD 2018-22-12 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 2018-22-12 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.