Is AD 2017-08-04 a recurring Airworthiness Directive?

No — AD 2017-08-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2017-08-04 apply to?

AD 2017-08-04 applies to Bombardier, Inc. — models CL-600-2B19, CL-600. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2017-08-04

one-time

Official AD 2017-08-04 · FR doc 2017-07091 · 2017-04-12 · airframe

Airworthiness Directives; Bombardier, Inc. Airplanes

What this AD requires

We are superseding Airworthiness Directive (AD) 2015-03-01, for all Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. AD 2015-03-01 required installing additional attaching hardware on the left and right engine fan cowl access panels and the nacelle attaching structures. This new AD requires weight and balance data to be included in the Weight and Balance Manual for certain modified airplanes. This new AD also requires the weight and balance data to be used in order to calculate the center of gravity for affected airplanes. This AD was prompted by updates to the weight and balance data needed to calculate the center of gravity for affected airplanes. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2017-08-04 applies to

MakesBombardier, Inc.

ModelsCL-600-2B19, CL-600

Model CL-600-2B19 is marketed as the Regional Jet Series 100 and 440.

Whether AD 2017-08-04 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 2017-08-04 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.