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Airworthiness Directive 2021-07013

one-time
AD 2021-07013 · 2021-04-07 · airframe

Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a report that some piccolo ducts for the wing anti-ice system have bleed holes that do not conform to requirements. This AD requires, depending on airplane configuration, inspection for the presence of affected wing anti-ice system piccolo ducts and corrective actions, or replacement of affected piccolo ducts with new piccolo ducts. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-07013 applies to

MakesMhi Rj Aviation Ulc
ModelsCL-600-2C10, CL-600-2C11, CL-600-2D24, CL-600
Serial-conditional — narrows to serials 10082–10082, 10135–10135, 10141–10141, 10155–10155, 10166–10166, 10173–10173, 10178–10178, 10186–10186, 10249–10249, 10296–10296, 10327–10327, 15099–15099, 15102–15102, 15144–15144, 15159–15159, 15201–15201, 15212–15212, 15279–15279, 15396–15396, 15409–15413, 15415–15415, 15419–15427, 15430–15430, 15449–15449, 15453–15453.

S/Ns 10082, 10135, 10141, 10155, 10166, 10173, 10178, 10186, 10249, 10296, and 10327 apply to CL-600-2C10 and CL-600-2C11; remaining S/Ns apply to CL-600-2D24.

Whether AD 2021-07013 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 2021-07013 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.