Is AD 2023-16-01 a recurring Airworthiness Directive?

No — AD 2023-16-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2023-16-01 apply to?

AD 2023-16-01 applies to Bombardier — models CL-600-2B16, CL-600. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2023-16-01

one-time

Official AD 2023-16-01 · FR doc 2023-16648 · 2023-08-07 · airframe

Airworthiness Directives; Bombardier, Inc., Airplanes

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2023-12- 20, which applied to certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. AD 2023-12-20 required replacing certain oxygen system hoses and prohibited installing affected oxygen hoses. Since the FAA issued AD 2023-12-20, the FAA has learned of an error in a required compliance time. This AD retains the requirements of AD 2023-12-20, with a revised compliance time for the replacement. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2023-16-01 applies to

MakesBombardier

ModelsCL-600-2B16, CL-600

Serial-conditional — narrows to serials 5701–5990, 6050–6162.

Applies to Model CL-600-2B16 (604 Variant) airplanes with an interior modified in accordance with Supplemental Type Certificate (STC) ST02355NY.

Whether AD 2023-16-01 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 2023-16-01 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.