Is AD 2013-08-10 a recurring Airworthiness Directive?

Yes — AD 2013-08-10 requires a repetitive inspection every 1000 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2013-08-10 apply to?

AD 2013-08-10 applies to Tracor (Convair) — models 340, 440, C-131B, C-131D, C-131E, C131F/R4Y-1, C-131. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-08-10

recurring

Official AD 2013-08-10 · FR doc 2013-08987 · 2013-04-25 · airframe

Airworthiness Directives; Kelowna Flightcraft R & D Ltd. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Tracor (Convair) Model 340 and 440 airplanes and certain Military Model C-131B, C-131D, C-131E, and C131F/R4Y-1 airplanes. This AD requires repetitive inspections of the lower skin of the wings for cracking around the inboard side of the wing station (WS) 6 and 7 access panel doubler fingers and between stringers 5 and 11; repetitive inspections of the lower skin of the wings for cracking around stringers 6, 8, and 10, and around the WS 6 and WS 7 access panel doubler fingers; and repair if necessary. This AD was prompted by a report of a crack found on the lower skin of the right-hand wing between WS 5 and WS 6. We are issuing this AD to detect and correct fatigue cracking of the lower skin of the wings, which could result in reduced structural integrity of the wings.

Repetitive inspection. Re-inspect every 1000 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 2013-08-10 applies to

MakesTracor (Convair)

Models340, 440, C-131B, C-131D, C-131E, C131F/R4Y-1, C-131

Part-conditional — SA1096WE, SA6088NM, SA4-1100.

Model 340 and 440 designation includes airplanes modified by STC SA1096WE (commonly referred to as Model 640), STC SA6088NM (commonly referred to as Model 5800), and STC SA4-1100 (commonly referred to as Model 580); also applies to Military Model C-131B, C-131D, C-131E, and C131F/R4Y-1 airplanes.

Whether AD 2013-08-10 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 2013-08-10 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.