Is AD 2006-23-01 a recurring Airworthiness Directive?

Yes — AD 2006-23-01 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2006-23-01 apply to?

AD 2006-23-01 applies to Pilatus Aircraft Ltd. — models PC-7. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2006-23-01

recurring

Official AD 2006-23-01 · FR doc E6-18734 · 2006-11-08 · airframe

Airworthiness Directives; Pilatus Aircraft Ltd. Model PC-7 Airplanes

What this AD requires

The FAA adopts a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-7 airplanes. This AD requires you to do repetitive eddy-current, non-destructive inspections of the nose skin and adjacent structure above the left and right main landing gear bay and repetitive visual inspections of the forward support structure of the floor panel for crack damage. If you find any crack damage, this AD requires you to contact Pilatus to obtain a repair solution and incorporate the repair. This AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. We are issuing this AD to detect and correct cracks in the nose skin and adjacent structure above the left and right main landing gear bay and in the forward support structure of the floor panel. Crack propagation in certain areas could lead to failure of the main wing torsion box, which could result in loss of control.

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 2006-23-01 applies to

MakesPilatus Aircraft Ltd.

ModelsPC-7

Serial-conditional — narrows to serials 101–618.

Whether AD 2006-23-01 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 2006-23-01 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.