Is AD 2017-09-01 a recurring Airworthiness Directive?

No — AD 2017-09-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2017-09-01 apply to?

AD 2017-09-01 applies to Bombardier — models CL-600-2E25, CL-600. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2017-09-01

one-time

Official AD 2017-09-01 · FR doc 2017-08184 · 2017-04-26 · airframe

Airworthiness Directives; Bombardier, Inc., Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD requires a detailed inspection of the circuit breakers, replacement of damaged circuit breakers, and installation of a circuit breaker bushing assembly. This AD was prompted by a report of cracks found in the plastic casing of cockpit circuit breaker panels. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2017-09-01 applies to

MakesBombardier

ModelsCL-600-2E25, CL-600

Applies to airplanes as identified in Bombardier Service Bulletin 670BA-24-037, Revision A, dated July 11, 2016. Also marketed as the Regional Jet Series 1000.

Whether AD 2017-09-01 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 2017-09-01 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.