Is AD 2009-18-03 a recurring Airworthiness Directive?

No — AD 2009-18-03 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2009-18-03

Q: Which aircraft does AD 2009-18-03 apply to?

AD 2009-18-03 applies to Pilatus Aircraft Ltd. — models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2009-18-03 · FR doc E9-20386 · 2009-08-27 · airframe

Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 Airplanes

What this AD requires

We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Which aircraft AD 2009-18-03 applies to

MakesPilatus Aircraft Ltd.

ModelsPC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, PC-6/C1-H2

Serial-conditional — narrows to serials 101–999, 2001–2092.

Also identified as Fairchild Republic Company, Fairchild Industries, Fairchild Heli Porter, or Fairchild-Hiller Corporation PC-6 airplanes (same aircraft under earlier manufacturer names). Addresses corrosion, wear, and fatigue cracks in the upper wing strut fittings; requires repetitive eddy current/visual inspections and, per Pilatus SB 57-005 R1, optional oversize bolts or a redesigned wing strut fitting.

Whether AD 2009-18-03 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 2009-18-03 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.