Is AD 2021-16238 a recurring Airworthiness Directive?

No — AD 2021-16238 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2021-16238

Q: Which aircraft does AD 2021-16238 apply to?

AD 2021-16238 applies to Mhi Rj Aviation Ulc, Bombardier, Inc. — models CL-600-2D15, CL-600-2D24, CL-600. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 2021-16238 · 2021-07-30 · 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-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a report that the lower aft outboard supporting structure of galley 2 does not meet certification requirements for all flight and/or emergency landing loads. This AD requires modifying the floor structure between certain fuselage stations. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-16238 applies to

MakesMhi Rj Aviation UlcBombardier, Inc.

ModelsCL-600-2D15, CL-600-2D24, CL-600

Serial-conditional — narrows to serials 15057–15057, 15063–15065, 15071–15071, 15074–15074, 15079–15079, 15087–15087, 15090–15090, 15106–15106, 15111–15111, 15113–15113, 15115–15115, 15117–15117.

Type certificate previously held by Bombardier, Inc.

Whether AD 2021-16238 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 2021-16238 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.