Is AD 2020-28860 a recurring Airworthiness Directive?

No — AD 2020-28860 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2020-28860 apply to?

AD 2020-28860 applies to Airbus Canada — models BD-500-1A10, BD-500-1A11, BD-500. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-28860

one-time

AD 2020-28860 · 2020-12-30 · airframe

Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by a report that during installation on the final assembly line, a foreign object damage (FOD) protective end cap was not removed from an extraction duct of the crew oxygen system. The protective end cap must be removed to prevent a build-up of oxygen under the flight deck floor, which is a fire risk. This AD requires inspecting the air extraction duct installation to determine if a protective end cap is installed, and removing any protective end cap found. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2020-28860 applies to

MakesAirbus Canada

ModelsBD-500-1A10, BD-500-1A11, BD-500

Serial-conditional — narrows to serials 50010–50018, 50020–50039, 55003–55016, 55018–55054.

BD-500-1A10: serial numbers 50010-50018 and 50020-50039 inclusive. BD-500-1A11: serial numbers 55003-55016 and 55018-55054 inclusive.

Whether AD 2020-28860 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 2020-28860 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.