Is AD 2013-10-04 a recurring Airworthiness Directive?

Yes — AD 2013-10-04 requires a repetitive inspection every 60 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2013-10-04 apply to?

AD 2013-10-04 applies to Piper Aircraft, Inc. — models PA-31, PA-31-325, PA-31-350. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-10-04

recurring

Official AD 2013-10-04 · FR doc 2013-13666 · 2013-06-12 · airframe

Airworthiness Directives; Piper Aircraft, Inc. Airplanes

What this AD requires

We are superseding an existing airworthiness directive (AD) for all Piper Aircraft, Inc. Models PA-31, PA-31-325, and PA-31-350 airplanes. That AD currently requires a detailed repetitive inspection of the exhaust system downstream of the turbochargers and repair or replacement of parts as necessary. This new AD requires visual repetitive inspections, expanding the inspection scope to include the entirety of each airplane exhaust system. This AD was prompted by reports of exhaust system failures upstream of aircraft turbochargers and between recurring detailed inspections. We are issuing this AD to correct the unsafe condition on these products.

Repetitive inspection. Re-inspect every 60 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2013-10-04 applies to

MakesPiper Aircraft, Inc.

ModelsPA-31, PA-31-325, PA-31-350

Applies only to turbocharged airplanes, all serial numbers.

Whether AD 2013-10-04 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 2013-10-04 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.