Is AD 2016-16321 a recurring Airworthiness Directive?

No — AD 2016-16321 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2016-16321

Q: Which aircraft does AD 2016-16321 apply to?

AD 2016-16321 applies to Bombardier, Inc. — models CL-600-2B19, CL-600-2C10, CL-600-2D15, CL-600-2D24, CL-600-2E25, CL-600. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 2016-16321 · 2016-07-12 · airframe

Airworthiness Directives; Bombardier, Inc. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440), Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), Model CL-600- 2D15 (Regional Jet Series 705), Model CL-600-2D24 (Regional Jet Series 900), and Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by reports of undesirable changes in the Reference Airspeed (RAS) Bug, occurring during flight without pilot input. This AD requires replacing the flight control computer (FCC). We are issuing this AD to prevent uncommanded pitch changes, which could result in deviation from a safe flight path.

Which aircraft AD 2016-16321 applies to

MakesBombardier, Inc.

ModelsCL-600-2B19, CL-600-2C10, CL-600-2D15, CL-600-2D24, CL-600-2E25, CL-600

All serial numbers, but only airplanes equipped with a flight control computer (FCC) having a part number and serial number listed in Bombardier Service Bulletin 601R-22-018, Revision A, dated November 3, 2015, or Service Bulletin 670BA-22-009, dated August 17, 2015, as applicable. CL-600-2B19 is also known as Regional Jet Series 100 & 440; CL-600-2C10 as Series 700/701/702; CL-600-2D15 as Series 705; CL-600-2D24 as Series 900; CL-600-2E25 as Series 1000.

Whether AD 2016-16321 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 2016-16321 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.