Is AD 2013-03-14 a recurring Airworthiness Directive?

Yes — AD 2013-03-14 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2013-03-14 apply to?

AD 2013-03-14 applies to Pratt & Whitney Canada — models PT6C-67C, PT6C. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-03-14

recurring

Official AD 2013-03-14 · FR doc 2013-03266 · 2013-02-19 · turboshaft engine

Airworthiness Directives; Pratt & Whitney Canada Corp Turboshaft Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney Canada Corp. (P&WC) PT6C-67C turboshaft engines. This AD requires initial and repetitive borescope inspections to verify the presence of a retaining ring securing the power turbine (PT) baffle located near the second stage PT disk. If the engine fails the inspection, this AD also requires removing the engine from service before further flight. This AD was prompted by five reported incidents of second stage PT disk damage. We are issuing this AD to prevent damage to the PT disk which, if undetected, could cause uncontained PT disk failure and loss of control of the helicopter.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2013-03-14 applies to

MakesPratt & Whitney Canada

ModelsPT6C-67C, PT6C

Applies only to engines that have not had P&WC Service Bulletin (SB) No. PT6C-72-41056 incorporated.

Whether AD 2013-03-14 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 2013-03-14 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.