Is AD 2013-16-16 a recurring Airworthiness Directive?

No — AD 2013-16-16 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-16-16 apply to?

AD 2013-16-16 applies to Agusta, Bell — models AB412, AB412 EP, 412, 412CF, 412EP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-16-16

one-time

Official AD 2013-16-16 · FR doc 2013-19434 · 2013-08-13 · airframe

Airworthiness Directives; Agusta S.p.A. and Bell Helicopter Textron Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 and AB412 EP, and Bell Helicopter Textron (Bell) Model 412, 412CF, and 412EP helicopters with certain DART Aerospace Ltd. (Dart) high gear aft crosstubes (crosstube) installed. This AD requires adding a life limit of 10,000 landings to the crosstube and removing from service any crosstubes with more than 10,000 accumulated landings. This AD is prompted by five separate reports of crosstube failures. The actions in this AD are intended to prevent failure of the crosstube and subsequent collapse of the landing gear.

Which aircraft AD 2013-16-16 applies to

MakesAgusta Bell

ModelsAB412, AB412 EP, 412, 412CF, 412EP

Part-conditional — D412-664-203.

Applies only when DART Aerospace Ltd. high gear aft crosstube P/N D412-664-203 is installed under STC No. SR01298NY.

Whether AD 2013-16-16 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 2013-16-16 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.