Is AD 2013-26-13 a recurring Airworthiness Directive?

No — AD 2013-26-13 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-26-13 apply to?

AD 2013-26-13 applies to General Electric — models T700-GE-401C, T700-GE-701C, T700. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-26-13

one-time

Official AD 2013-26-13 · FR doc 2013-31525 · 2014-01-06 · turboshaft engine

Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Sikorsky Model S-70, S-70A, S-70C, S-70C (M), and S-70C (M1) helicopters with General Electric (GE) T700-GE-401C or T700-GE-701C engines installed. This AD requires establishing new fatigue life limits for certain GE engine gas generator turbine (GGT) rotor parts. This AD was prompted by a reevaluation of the method for determining the life limit for certain GE engine GGT rotor parts and the determination that these life limits should be based on low cycle fatigue (LCF) events instead of hours time-in-service (TIS). The actions are intended to prevent fatigue failure of a GGT rotor part, engine failure, and subsequent loss of control of the helicopter.

Which aircraft AD 2013-26-13 applies to

MakesGeneral Electric

ModelsT700-GE-401C, T700-GE-701C, T700

Applies to General Electric T700-GE-401C or T700-GE-701C engines installed on Model S-70, S-70A, S-70C, S-70C (M), and S-70C (M1) helicopters, certificated in any category.

Whether AD 2013-26-13 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 2013-26-13 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.